Home / 19,974.80-29,981.40-10,125.20

Finding the Fourth Proportional to 19,974.80, 29,981.40 and 10,125.20

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Solution

The fourth proportional to 19,974.80, 29,981.40 and 10,125.20 is: 15,197.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,974.80 : 29,981.40 = 10,125.20 : x
  2. Step 2: Convert to fraction form
    19,974.80/29,981.40 = 10,125.20/x
  3. Step 3: Cross multiply
    19,974.80x = 29,981.40 × 10,125.20
  4. Step 4: Simplify right side
    19,974.80x = 303,567,671.28
  5. Step 5: Solve for x
    x = 303,567,671.28/19,974.80
  6. Step 6: Final answer
    x = 15,197.53

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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.