Home / 28,354.41-42,531.63-12,753.81

Finding the Fourth Proportional to 28,354.41, 42,531.63 and 12,753.81

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Solution

The fourth proportional to 28,354.41, 42,531.63 and 12,753.81 is: 19,130.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.41 : 42,531.63 = 12,753.81 : x
  2. Step 2: Convert to fraction form
    28,354.41/42,531.63 = 12,753.81/x
  3. Step 3: Cross multiply
    28,354.41x = 42,531.63 × 12,753.81
  4. Step 4: Simplify right side
    28,354.41x = 542,440,328.01
  5. Step 5: Solve for x
    x = 542,440,328.01/28,354.41
  6. Step 6: Final answer
    x = 19,130.72

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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.