Home / 20,554.61-28,365.44-11,123.18

Finding the Fourth Proportional to 20,554.61, 28,365.44 and 11,123.18

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Solution

The fourth proportional to 20,554.61, 28,365.44 and 11,123.18 is: 15,350.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.61 : 28,365.44 = 11,123.18 : x
  2. Step 2: Convert to fraction form
    20,554.61/28,365.44 = 11,123.18/x
  3. Step 3: Cross multiply
    20,554.61x = 28,365.44 × 11,123.18
  4. Step 4: Simplify right side
    20,554.61x = 315,513,894.90
  5. Step 5: Solve for x
    x = 315,513,894.90/20,554.61
  6. Step 6: Final answer
    x = 15,350.03

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Double scale
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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.