Home / 45,311.70-67,940.64-13,712.16

Finding the Fourth Proportional to 45,311.70, 67,940.64 and 13,712.16

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Solution

The fourth proportional to 45,311.70, 67,940.64 and 13,712.16 is: 20,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,311.70 : 67,940.64 = 13,712.16 : x
  2. Step 2: Convert to fraction form
    45,311.70/67,940.64 = 13,712.16/x
  3. Step 3: Cross multiply
    45,311.70x = 67,940.64 × 13,712.16
  4. Step 4: Simplify right side
    45,311.70x = 931,612,926.18
  5. Step 5: Solve for x
    x = 931,612,926.18/45,311.70
  6. Step 6: Final answer
    x = 20,560.10

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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.