Home / 21,227.38-31,655.76-18,607.02

Finding the Fourth Proportional to 21,227.38, 31,655.76 and 18,607.02

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Solution

The fourth proportional to 21,227.38, 31,655.76 and 18,607.02 is: 27,748.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.38 : 31,655.76 = 18,607.02 : x
  2. Step 2: Convert to fraction form
    21,227.38/31,655.76 = 18,607.02/x
  3. Step 3: Cross multiply
    21,227.38x = 31,655.76 × 18,607.02
  4. Step 4: Simplify right side
    21,227.38x = 589,019,359.44
  5. Step 5: Solve for x
    x = 589,019,359.44/21,227.38
  6. Step 6: Final answer
    x = 27,748.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.