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Finding the Fourth Proportional to 37,900.80, 56,851.20 and 13,276.80

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Solution

The fourth proportional to 37,900.80, 56,851.20 and 13,276.80 is: 19,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,900.80 : 56,851.20 = 13,276.80 : x
  2. Step 2: Convert to fraction form
    37,900.80/56,851.20 = 13,276.80/x
  3. Step 3: Cross multiply
    37,900.80x = 56,851.20 × 13,276.80
  4. Step 4: Simplify right side
    37,900.80x = 754,802,012.16
  5. Step 5: Solve for x
    x = 754,802,012.16/37,900.80
  6. Step 6: Final answer
    x = 19,915.20

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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.