Home / 19,519.12-26,939.84-11,565.28

Finding the Fourth Proportional to 19,519.12, 26,939.84 and 11,565.28

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Solution

The fourth proportional to 19,519.12, 26,939.84 and 11,565.28 is: 15,962.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,519.12 : 26,939.84 = 11,565.28 : x
  2. Step 2: Convert to fraction form
    19,519.12/26,939.84 = 11,565.28/x
  3. Step 3: Cross multiply
    19,519.12x = 26,939.84 × 11,565.28
  4. Step 4: Simplify right side
    19,519.12x = 311,566,792.76
  5. Step 5: Solve for x
    x = 311,566,792.76/19,519.12
  6. Step 6: Final answer
    x = 15,962.13

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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.