Home / 19,935.88-29,962.14-18,487.72

Finding the Fourth Proportional to 19,935.88, 29,962.14 and 18,487.72

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Solution

The fourth proportional to 19,935.88, 29,962.14 and 18,487.72 is: 27,785.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,935.88 : 29,962.14 = 18,487.72 : x
  2. Step 2: Convert to fraction form
    19,935.88/29,962.14 = 18,487.72/x
  3. Step 3: Cross multiply
    19,935.88x = 29,962.14 × 18,487.72
  4. Step 4: Simplify right side
    19,935.88x = 553,931,654.92
  5. Step 5: Solve for x
    x = 553,931,654.92/19,935.88
  6. Step 6: Final answer
    x = 27,785.66

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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.