Home / 15,081.80-22,617.28-5,218.40

Finding the Fourth Proportional to 15,081.80, 22,617.28 and 5,218.40

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Solution

The fourth proportional to 15,081.80, 22,617.28 and 5,218.40 is: 7,825.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.80 : 22,617.28 = 5,218.40 : x
  2. Step 2: Convert to fraction form
    15,081.80/22,617.28 = 5,218.40/x
  3. Step 3: Cross multiply
    15,081.80x = 22,617.28 × 5,218.40
  4. Step 4: Simplify right side
    15,081.80x = 118,026,013.95
  5. Step 5: Solve for x
    x = 118,026,013.95/15,081.80
  6. Step 6: Final answer
    x = 7,825.72

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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.