Home / 20,655.38-28,504.36-11,223.94

Finding the Fourth Proportional to 20,655.38, 28,504.36 and 11,223.94

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Solution

The fourth proportional to 20,655.38, 28,504.36 and 11,223.94 is: 15,489.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.38 : 28,504.36 = 11,223.94 : x
  2. Step 2: Convert to fraction form
    20,655.38/28,504.36 = 11,223.94/x
  3. Step 3: Cross multiply
    20,655.38x = 28,504.36 × 11,223.94
  4. Step 4: Simplify right side
    20,655.38x = 319,931,083.86
  5. Step 5: Solve for x
    x = 319,931,083.86/20,655.38
  6. Step 6: Final answer
    x = 15,489.00

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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.