Home / 28,563.02-42,853.29-12,781.34

Finding the Fourth Proportional to 28,563.02, 42,853.29 and 12,781.34

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Solution

The fourth proportional to 28,563.02, 42,853.29 and 12,781.34 is: 19,175.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.02 : 42,853.29 = 12,781.34 : x
  2. Step 2: Convert to fraction form
    28,563.02/42,853.29 = 12,781.34/x
  3. Step 3: Cross multiply
    28,563.02x = 42,853.29 × 12,781.34
  4. Step 4: Simplify right side
    28,563.02x = 547,722,469.61
  5. Step 5: Solve for x
    x = 547,722,469.61/28,563.02
  6. Step 6: Final answer
    x = 19,175.93

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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.