Home / 15,129.36-22,686.12-8,891.28

Finding the Fourth Proportional to 15,129.36, 22,686.12 and 8,891.28

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Solution

The fourth proportional to 15,129.36, 22,686.12 and 8,891.28 is: 13,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.36 : 22,686.12 = 8,891.28 : x
  2. Step 2: Convert to fraction form
    15,129.36/22,686.12 = 8,891.28/x
  3. Step 3: Cross multiply
    15,129.36x = 22,686.12 × 8,891.28
  4. Step 4: Simplify right side
    15,129.36x = 201,708,645.03
  5. Step 5: Solve for x
    x = 201,708,645.03/15,129.36
  6. Step 6: Final answer
    x = 13,332.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.