Home / 20,655.28-28,504.46-11,223.84

Finding the Fourth Proportional to 20,655.28, 28,504.46 and 11,223.84

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Solution

The fourth proportional to 20,655.28, 28,504.46 and 11,223.84 is: 15,489.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.28 : 28,504.46 = 11,223.84 : x
  2. Step 2: Convert to fraction form
    20,655.28/28,504.46 = 11,223.84/x
  3. Step 3: Cross multiply
    20,655.28x = 28,504.46 × 11,223.84
  4. Step 4: Simplify right side
    20,655.28x = 319,929,526.39
  5. Step 5: Solve for x
    x = 319,929,526.39/20,655.28
  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.