Home / 21,585.20-29,789.70-12,632.16

Finding the Fourth Proportional to 21,585.20, 29,789.70 and 12,632.16

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Solution

The fourth proportional to 21,585.20, 29,789.70 and 12,632.16 is: 17,433.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.20 : 29,789.70 = 12,632.16 : x
  2. Step 2: Convert to fraction form
    21,585.20/29,789.70 = 12,632.16/x
  3. Step 3: Cross multiply
    21,585.20x = 29,789.70 × 12,632.16
  4. Step 4: Simplify right side
    21,585.20x = 376,308,256.75
  5. Step 5: Solve for x
    x = 376,308,256.75/21,585.20
  6. Step 6: Final answer
    x = 17,433.63

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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.