Home / 28,432.12-42,666.64-12,849.88

Finding the Fourth Proportional to 28,432.12, 42,666.64 and 12,849.88

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Solution

The fourth proportional to 28,432.12, 42,666.64 and 12,849.88 is: 19,283.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.12 : 42,666.64 = 12,849.88 : x
  2. Step 2: Convert to fraction form
    28,432.12/42,666.64 = 12,849.88/x
  3. Step 3: Cross multiply
    28,432.12x = 42,666.64 × 12,849.88
  4. Step 4: Simplify right side
    28,432.12x = 548,261,204.00
  5. Step 5: Solve for x
    x = 548,261,204.00/28,432.12
  6. Step 6: Final answer
    x = 19,283.16

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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.