Home / 28,127.80-42,207.90-10,610.20

Finding the Fourth Proportional to 28,127.80, 42,207.90 and 10,610.20

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Solution

The fourth proportional to 28,127.80, 42,207.90 and 10,610.20 is: 15,921.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.80 : 42,207.90 = 10,610.20 : x
  2. Step 2: Convert to fraction form
    28,127.80/42,207.90 = 10,610.20/x
  3. Step 3: Cross multiply
    28,127.80x = 42,207.90 × 10,610.20
  4. Step 4: Simplify right side
    28,127.80x = 447,834,260.58
  5. Step 5: Solve for x
    x = 447,834,260.58/28,127.80
  6. Step 6: Final answer
    x = 15,921.41

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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.