Home / 28,004.20-42,006.30-22,755.40

Finding the Fourth Proportional to 28,004.20, 42,006.30 and 22,755.40

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Solution

The fourth proportional to 28,004.20, 42,006.30 and 22,755.40 is: 34,133.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.20 : 42,006.30 = 22,755.40 : x
  2. Step 2: Convert to fraction form
    28,004.20/42,006.30 = 22,755.40/x
  3. Step 3: Cross multiply
    28,004.20x = 42,006.30 × 22,755.40
  4. Step 4: Simplify right side
    28,004.20x = 955,870,159.02
  5. Step 5: Solve for x
    x = 955,870,159.02/28,004.20
  6. Step 6: Final answer
    x = 34,133.10

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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.