Home / 28,055.20-42,082.86-11,403.48

Finding the Fourth Proportional to 28,055.20, 42,082.86 and 11,403.48

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Solution

The fourth proportional to 28,055.20, 42,082.86 and 11,403.48 is: 17,105.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.20 : 42,082.86 = 11,403.48 : x
  2. Step 2: Convert to fraction form
    28,055.20/42,082.86 = 11,403.48/x
  3. Step 3: Cross multiply
    28,055.20x = 42,082.86 × 11,403.48
  4. Step 4: Simplify right side
    28,055.20x = 479,891,052.35
  5. Step 5: Solve for x
    x = 479,891,052.35/28,055.20
  6. Step 6: Final answer
    x = 17,105.24

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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.