Home / 31,419.90-47,122.56-13,880.16

Finding the Fourth Proportional to 31,419.90, 47,122.56 and 13,880.16

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Solution

The fourth proportional to 31,419.90, 47,122.56 and 13,880.16 is: 20,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,419.90 : 47,122.56 = 13,880.16 : x
  2. Step 2: Convert to fraction form
    31,419.90/47,122.56 = 13,880.16/x
  3. Step 3: Cross multiply
    31,419.90x = 47,122.56 × 13,880.16
  4. Step 4: Simplify right side
    31,419.90x = 654,068,672.41
  5. Step 5: Solve for x
    x = 654,068,672.41/31,419.90
  6. Step 6: Final answer
    x = 20,817.02

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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.