Home / 20,554.17-28,364.58-11,122.71

Finding the Fourth Proportional to 20,554.17, 28,364.58 and 11,122.71

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Solution

The fourth proportional to 20,554.17, 28,364.58 and 11,122.71 is: 15,349.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.17 : 28,364.58 = 11,122.71 : x
  2. Step 2: Convert to fraction form
    20,554.17/28,364.58 = 11,122.71/x
  3. Step 3: Cross multiply
    20,554.17x = 28,364.58 × 11,122.71
  4. Step 4: Simplify right side
    20,554.17x = 315,490,997.61
  5. Step 5: Solve for x
    x = 315,490,997.61/20,554.17
  6. Step 6: Final answer
    x = 15,349.25

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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.