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Finding the Fourth Proportional to 28,465.52, 42,704.04 and 9,998.96

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Solution

The fourth proportional to 28,465.52, 42,704.04 and 9,998.96 is: 15,000.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,465.52 : 42,704.04 = 9,998.96 : x
  2. Step 2: Convert to fraction form
    28,465.52/42,704.04 = 9,998.96/x
  3. Step 3: Cross multiply
    28,465.52x = 42,704.04 × 9,998.96
  4. Step 4: Simplify right side
    28,465.52x = 426,995,987.80
  5. Step 5: Solve for x
    x = 426,995,987.80/28,465.52
  6. Step 6: Final answer
    x = 15,000.46

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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.