Home / 15,213.40-21,101.90-14,808.81

Finding the Fourth Proportional to 15,213.40, 21,101.90 and 14,808.81

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Solution

The fourth proportional to 15,213.40, 21,101.90 and 14,808.81 is: 20,540.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,213.40 : 21,101.90 = 14,808.81 : x
  2. Step 2: Convert to fraction form
    15,213.40/21,101.90 = 14,808.81/x
  3. Step 3: Cross multiply
    15,213.40x = 21,101.90 × 14,808.81
  4. Step 4: Simplify right side
    15,213.40x = 312,493,848.19
  5. Step 5: Solve for x
    x = 312,493,848.19/15,213.40
  6. Step 6: Final answer
    x = 20,540.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.