Home / 18,128.80-25,013.52-10,677.28

Finding the Fourth Proportional to 18,128.80, 25,013.52 and 10,677.28

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Solution

The fourth proportional to 18,128.80, 25,013.52 and 10,677.28 is: 14,732.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.80 : 25,013.52 = 10,677.28 : x
  2. Step 2: Convert to fraction form
    18,128.80/25,013.52 = 10,677.28/x
  3. Step 3: Cross multiply
    18,128.80x = 25,013.52 × 10,677.28
  4. Step 4: Simplify right side
    18,128.80x = 267,076,356.83
  5. Step 5: Solve for x
    x = 267,076,356.83/18,128.80
  6. Step 6: Final answer
    x = 14,732.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.