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Finding the Fourth Proportional to 28,118.86, 42,177.24 and 7,059.04

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Solution

The fourth proportional to 28,118.86, 42,177.24 and 7,059.04 is: 10,588.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.86 : 42,177.24 = 7,059.04 : x
  2. Step 2: Convert to fraction form
    28,118.86/42,177.24 = 7,059.04/x
  3. Step 3: Cross multiply
    28,118.86x = 42,177.24 × 7,059.04
  4. Step 4: Simplify right side
    28,118.86x = 297,730,824.25
  5. Step 5: Solve for x
    x = 297,730,824.25/28,118.86
  6. Step 6: Final answer
    x = 10,588.30

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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.