Home / 28,639.61-42,941.77-9,915.29

Finding the Fourth Proportional to 28,639.61, 42,941.77 and 9,915.29

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Solution

The fourth proportional to 28,639.61, 42,941.77 and 9,915.29 is: 14,866.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.61 : 42,941.77 = 9,915.29 : x
  2. Step 2: Convert to fraction form
    28,639.61/42,941.77 = 9,915.29/x
  3. Step 3: Cross multiply
    28,639.61x = 42,941.77 × 9,915.29
  4. Step 4: Simplify right side
    28,639.61x = 425,780,102.66
  5. Step 5: Solve for x
    x = 425,780,102.66/28,639.61
  6. Step 6: Final answer
    x = 14,866.83

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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.