Home / 15,816.36-21,826.62-8,742.63

Finding the Fourth Proportional to 15,816.36, 21,826.62 and 8,742.63

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Solution

The fourth proportional to 15,816.36, 21,826.62 and 8,742.63 is: 12,064.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.36 : 21,826.62 = 8,742.63 : x
  2. Step 2: Convert to fraction form
    15,816.36/21,826.62 = 8,742.63/x
  3. Step 3: Cross multiply
    15,816.36x = 21,826.62 × 8,742.63
  4. Step 4: Simplify right side
    15,816.36x = 190,822,062.81
  5. Step 5: Solve for x
    x = 190,822,062.81/15,816.36
  6. Step 6: Final answer
    x = 12,064.85

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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.