Home / 28,359.72-42,537.02-8,642.92

Finding the Fourth Proportional to 28,359.72, 42,537.02 and 8,642.92

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Solution

The fourth proportional to 28,359.72, 42,537.02 and 8,642.92 is: 12,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.72 : 42,537.02 = 8,642.92 : x
  2. Step 2: Convert to fraction form
    28,359.72/42,537.02 = 8,642.92/x
  3. Step 3: Cross multiply
    28,359.72x = 42,537.02 × 8,642.92
  4. Step 4: Simplify right side
    28,359.72x = 367,644,060.90
  5. Step 5: Solve for x
    x = 367,644,060.90/28,359.72
  6. Step 6: Final answer
    x = 12,963.60

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1.5x scale

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.