Home / 28,114.30-42,171.90-7,337.80

Finding the Fourth Proportional to 28,114.30, 42,171.90 and 7,337.80

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Solution

The fourth proportional to 28,114.30, 42,171.90 and 7,337.80 is: 11,006.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.30 : 42,171.90 = 7,337.80 : x
  2. Step 2: Convert to fraction form
    28,114.30/42,171.90 = 7,337.80/x
  3. Step 3: Cross multiply
    28,114.30x = 42,171.90 × 7,337.80
  4. Step 4: Simplify right side
    28,114.30x = 309,448,967.82
  5. Step 5: Solve for x
    x = 309,448,967.82/28,114.30
  6. Step 6: Final answer
    x = 11,006.82

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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.