Home / 19,712.43-29,581.61-9,318.51

Finding the Fourth Proportional to 19,712.43, 29,581.61 and 9,318.51

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Solution

The fourth proportional to 19,712.43, 29,581.61 and 9,318.51 is: 13,983.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,712.43 : 29,581.61 = 9,318.51 : x
  2. Step 2: Convert to fraction form
    19,712.43/29,581.61 = 9,318.51/x
  3. Step 3: Cross multiply
    19,712.43x = 29,581.61 × 9,318.51
  4. Step 4: Simplify right side
    19,712.43x = 275,656,482.01
  5. Step 5: Solve for x
    x = 275,656,482.01/19,712.43
  6. Step 6: Final answer
    x = 13,983.89

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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.