Home / 28,575.98-42,849.92-11,931.02

Finding the Fourth Proportional to 28,575.98, 42,849.92 and 11,931.02

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Solution

The fourth proportional to 28,575.98, 42,849.92 and 11,931.02 is: 17,890.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.98 : 42,849.92 = 11,931.02 : x
  2. Step 2: Convert to fraction form
    28,575.98/42,849.92 = 11,931.02/x
  3. Step 3: Cross multiply
    28,575.98x = 42,849.92 × 11,931.02
  4. Step 4: Simplify right side
    28,575.98x = 511,243,252.52
  5. Step 5: Solve for x
    x = 511,243,252.52/28,575.98
  6. Step 6: Final answer
    x = 17,890.66

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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.