Home / 20,510.29-28,302.42-11,556.19

Finding the Fourth Proportional to 20,510.29, 28,302.42 and 11,556.19

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Solution

The fourth proportional to 20,510.29, 28,302.42 and 11,556.19 is: 15,946.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.29 : 28,302.42 = 11,556.19 : x
  2. Step 2: Convert to fraction form
    20,510.29/28,302.42 = 11,556.19/x
  3. Step 3: Cross multiply
    20,510.29x = 28,302.42 × 11,556.19
  4. Step 4: Simplify right side
    20,510.29x = 327,068,142.98
  5. Step 5: Solve for x
    x = 327,068,142.98/20,510.29
  6. Step 6: Final answer
    x = 15,946.54

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Half scale
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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.