Home / 28,002.60-42,003.90-14,005.80

Finding the Fourth Proportional to 28,002.60, 42,003.90 and 14,005.80

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Solution

The fourth proportional to 28,002.60, 42,003.90 and 14,005.80 is: 21,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.60 : 42,003.90 = 14,005.80 : x
  2. Step 2: Convert to fraction form
    28,002.60/42,003.90 = 14,005.80/x
  3. Step 3: Cross multiply
    28,002.60x = 42,003.90 × 14,005.80
  4. Step 4: Simplify right side
    28,002.60x = 588,298,222.62
  5. Step 5: Solve for x
    x = 588,298,222.62/28,002.60
  6. Step 6: Final answer
    x = 21,008.70

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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.