Home / 15,590.20-21,510.84-9,622.12

Finding the Fourth Proportional to 15,590.20, 21,510.84 and 9,622.12

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Solution

The fourth proportional to 15,590.20, 21,510.84 and 9,622.12 is: 13,276.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,590.20 : 21,510.84 = 9,622.12 : x
  2. Step 2: Convert to fraction form
    15,590.20/21,510.84 = 9,622.12/x
  3. Step 3: Cross multiply
    15,590.20x = 21,510.84 × 9,622.12
  4. Step 4: Simplify right side
    15,590.20x = 206,979,883.78
  5. Step 5: Solve for x
    x = 206,979,883.78/15,590.20
  6. Step 6: Final answer
    x = 13,276.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.