Home / 15,507.20-21,400.17-9,535.34

Finding the Fourth Proportional to 15,507.20, 21,400.17 and 9,535.34

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Solution

The fourth proportional to 15,507.20, 21,400.17 and 9,535.34 is: 13,158.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.20 : 21,400.17 = 9,535.34 : x
  2. Step 2: Convert to fraction form
    15,507.20/21,400.17 = 9,535.34/x
  3. Step 3: Cross multiply
    15,507.20x = 21,400.17 × 9,535.34
  4. Step 4: Simplify right side
    15,507.20x = 204,057,914.75
  5. Step 5: Solve for x
    x = 204,057,914.75/15,507.20
  6. Step 6: Final answer
    x = 13,158.91

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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.