Home / 21,615.53-29,832.71-15,645.02

Finding the Fourth Proportional to 21,615.53, 29,832.71 and 15,645.02

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Solution

The fourth proportional to 21,615.53, 29,832.71 and 15,645.02 is: 21,592.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.53 : 29,832.71 = 15,645.02 : x
  2. Step 2: Convert to fraction form
    21,615.53/29,832.71 = 15,645.02/x
  3. Step 3: Cross multiply
    21,615.53x = 29,832.71 × 15,645.02
  4. Step 4: Simplify right side
    21,615.53x = 466,733,117.22
  5. Step 5: Solve for x
    x = 466,733,117.22/21,615.53
  6. Step 6: Final answer
    x = 21,592.50

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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.