Home / 13,127.32-18,079.50-11,358.28

Finding the Fourth Proportional to 13,127.32, 18,079.50 and 11,358.28

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Solution

The fourth proportional to 13,127.32, 18,079.50 and 11,358.28 is: 15,643.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.32 : 18,079.50 = 11,358.28 : x
  2. Step 2: Convert to fraction form
    13,127.32/18,079.50 = 11,358.28/x
  3. Step 3: Cross multiply
    13,127.32x = 18,079.50 × 11,358.28
  4. Step 4: Simplify right side
    13,127.32x = 205,352,023.26
  5. Step 5: Solve for x
    x = 205,352,023.26/13,127.32
  6. Step 6: Final answer
    x = 15,643.10

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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.