Home / 42,200.80-63,311.49-12,618.64

Finding the Fourth Proportional to 42,200.80, 63,311.49 and 12,618.64

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Solution

The fourth proportional to 42,200.80, 63,311.49 and 12,618.64 is: 18,931.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,200.80 : 63,311.49 = 12,618.64 : x
  2. Step 2: Convert to fraction form
    42,200.80/63,311.49 = 12,618.64/x
  3. Step 3: Cross multiply
    42,200.80x = 63,311.49 × 12,618.64
  4. Step 4: Simplify right side
    42,200.80x = 798,904,623.19
  5. Step 5: Solve for x
    x = 798,904,623.19/42,200.80
  6. Step 6: Final answer
    x = 18,931.03

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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.