Home / 19,985.52-29,979.92-11,666.41

Finding the Fourth Proportional to 19,985.52, 29,979.92 and 11,666.41

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Solution

The fourth proportional to 19,985.52, 29,979.92 and 11,666.41 is: 17,500.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.52 : 29,979.92 = 11,666.41 : x
  2. Step 2: Convert to fraction form
    19,985.52/29,979.92 = 11,666.41/x
  3. Step 3: Cross multiply
    19,985.52x = 29,979.92 × 11,666.41
  4. Step 4: Simplify right side
    19,985.52x = 349,758,038.49
  5. Step 5: Solve for x
    x = 349,758,038.49/19,985.52
  6. Step 6: Final answer
    x = 17,500.57

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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.