Home / 39,089.76-58,643.40-12,437.28

Finding the Fourth Proportional to 39,089.76, 58,643.40 and 12,437.28

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Solution

The fourth proportional to 39,089.76, 58,643.40 and 12,437.28 is: 18,658.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,089.76 : 58,643.40 = 12,437.28 : x
  2. Step 2: Convert to fraction form
    39,089.76/58,643.40 = 12,437.28/x
  3. Step 3: Cross multiply
    39,089.76x = 58,643.40 × 12,437.28
  4. Step 4: Simplify right side
    39,089.76x = 729,364,385.95
  5. Step 5: Solve for x
    x = 729,364,385.95/39,089.76
  6. Step 6: Final answer
    x = 18,658.71

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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.