Home / 25,108.80-37,663.20-21,172.20

Finding the Fourth Proportional to 25,108.80, 37,663.20 and 21,172.20

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Solution

The fourth proportional to 25,108.80, 37,663.20 and 21,172.20 is: 31,758.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,108.80 : 37,663.20 = 21,172.20 : x
  2. Step 2: Convert to fraction form
    25,108.80/37,663.20 = 21,172.20/x
  3. Step 3: Cross multiply
    25,108.80x = 37,663.20 × 21,172.20
  4. Step 4: Simplify right side
    25,108.80x = 797,412,803.04
  5. Step 5: Solve for x
    x = 797,412,803.04/25,108.80
  6. Step 6: Final answer
    x = 31,758.30

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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.