Home / 13,385.70-20,070.45-5,988.78

Finding the Fourth Proportional to 13,385.70, 20,070.45 and 5,988.78

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Solution

The fourth proportional to 13,385.70, 20,070.45 and 5,988.78 is: 8,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.70 : 20,070.45 = 5,988.78 : x
  2. Step 2: Convert to fraction form
    13,385.70/20,070.45 = 5,988.78/x
  3. Step 3: Cross multiply
    13,385.70x = 20,070.45 × 5,988.78
  4. Step 4: Simplify right side
    13,385.70x = 120,197,509.55
  5. Step 5: Solve for x
    x = 120,197,509.55/13,385.70
  6. Step 6: Final answer
    x = 8,979.55

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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.