Home / 20,702.60-31,053.90-13,266.80

Finding the Fourth Proportional to 20,702.60, 31,053.90 and 13,266.80

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Solution

The fourth proportional to 20,702.60, 31,053.90 and 13,266.80 is: 19,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.60 : 31,053.90 = 13,266.80 : x
  2. Step 2: Convert to fraction form
    20,702.60/31,053.90 = 13,266.80/x
  3. Step 3: Cross multiply
    20,702.60x = 31,053.90 × 13,266.80
  4. Step 4: Simplify right side
    20,702.60x = 411,985,880.52
  5. Step 5: Solve for x
    x = 411,985,880.52/20,702.60
  6. Step 6: Final answer
    x = 19,900.20

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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.