Home / 21,582.26-29,780.88-12,507.57

Finding the Fourth Proportional to 21,582.26, 29,780.88 and 12,507.57

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Solution

The fourth proportional to 21,582.26, 29,780.88 and 12,507.57 is: 17,258.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,582.26 : 29,780.88 = 12,507.57 : x
  2. Step 2: Convert to fraction form
    21,582.26/29,780.88 = 12,507.57/x
  3. Step 3: Cross multiply
    21,582.26x = 29,780.88 × 12,507.57
  4. Step 4: Simplify right side
    21,582.26x = 372,486,441.26
  5. Step 5: Solve for x
    x = 372,486,441.26/21,582.26
  6. Step 6: Final answer
    x = 17,258.92

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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.