Home / 28,415.10-42,622.65-28,220.70

Finding the Fourth Proportional to 28,415.10, 42,622.65 and 28,220.70

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Solution

The fourth proportional to 28,415.10, 42,622.65 and 28,220.70 is: 42,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,415.10 : 42,622.65 = 28,220.70 : x
  2. Step 2: Convert to fraction form
    28,415.10/42,622.65 = 28,220.70/x
  3. Step 3: Cross multiply
    28,415.10x = 42,622.65 × 28,220.70
  4. Step 4: Simplify right side
    28,415.10x = 1,202,841,018.86
  5. Step 5: Solve for x
    x = 1,202,841,018.86/28,415.10
  6. Step 6: Final answer
    x = 42,331.05

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Similar ratio
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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.