Home / 45,265.57-67,901.39-11,985.20

Finding the Fourth Proportional to 45,265.57, 67,901.39 and 11,985.20

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Solution

The fourth proportional to 45,265.57, 67,901.39 and 11,985.20 is: 17,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,265.57 : 67,901.39 = 11,985.20 : x
  2. Step 2: Convert to fraction form
    45,265.57/67,901.39 = 11,985.20/x
  3. Step 3: Cross multiply
    45,265.57x = 67,901.39 × 11,985.20
  4. Step 4: Simplify right side
    45,265.57x = 813,811,639.57
  5. Step 5: Solve for x
    x = 813,811,639.57/45,265.57
  6. Step 6: Final answer
    x = 17,978.60

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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.