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Finding the Fourth Proportional to 29,387, 40,554.06 and 16,139

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Solution

The fourth proportional to 29,387, 40,554.06 and 16,139 is: 22,271.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,387 : 40,554.06 = 16,139 : x
  2. Step 2: Convert to fraction form
    29,387/40,554.06 = 16,139/x
  3. Step 3: Cross multiply
    29,387x = 40,554.06 × 16,139
  4. Step 4: Simplify right side
    29,387x = 654,501,974.34
  5. Step 5: Solve for x
    x = 654,501,974.34/29,387
  6. Step 6: Final answer
    x = 22,271.82

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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.