Home / 15,642.84-21,615.10-12,524.76

Finding the Fourth Proportional to 15,642.84, 21,615.10 and 12,524.76

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Solution

The fourth proportional to 15,642.84, 21,615.10 and 12,524.76 is: 17,306.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,642.84 : 21,615.10 = 12,524.76 : x
  2. Step 2: Convert to fraction form
    15,642.84/21,615.10 = 12,524.76/x
  3. Step 3: Cross multiply
    15,642.84x = 21,615.10 × 12,524.76
  4. Step 4: Simplify right side
    15,642.84x = 270,723,939.88
  5. Step 5: Solve for x
    x = 270,723,939.88/15,642.84
  6. Step 6: Final answer
    x = 17,306.57

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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.