Home / 51,987.60-77,981.40-16,930.80

Finding the Fourth Proportional to 51,987.60, 77,981.40 and 16,930.80

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Solution

The fourth proportional to 51,987.60, 77,981.40 and 16,930.80 is: 25,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,987.60 : 77,981.40 = 16,930.80 : x
  2. Step 2: Convert to fraction form
    51,987.60/77,981.40 = 16,930.80/x
  3. Step 3: Cross multiply
    51,987.60x = 77,981.40 × 16,930.80
  4. Step 4: Simplify right side
    51,987.60x = 1,320,287,487.12
  5. Step 5: Solve for x
    x = 1,320,287,487.12/51,987.60
  6. Step 6: Final answer
    x = 25,396.20

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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.