Home / 18,921.79-26,107.46-12,460.76

Finding the Fourth Proportional to 18,921.79, 26,107.46 and 12,460.76

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Solution

The fourth proportional to 18,921.79, 26,107.46 and 12,460.76 is: 17,192.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.79 : 26,107.46 = 12,460.76 : x
  2. Step 2: Convert to fraction form
    18,921.79/26,107.46 = 12,460.76/x
  3. Step 3: Cross multiply
    18,921.79x = 26,107.46 × 12,460.76
  4. Step 4: Simplify right side
    18,921.79x = 325,318,793.27
  5. Step 5: Solve for x
    x = 325,318,793.27/18,921.79
  6. Step 6: Final answer
    x = 17,192.81

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Half scale
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Double scale
Find fourth proportional to 18,922.79, 26,108.84 and 12,461.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.