Home / 18,747.33-28,128.10-11,256.13

Finding the Fourth Proportional to 18,747.33, 28,128.10 and 11,256.13

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Solution

The fourth proportional to 18,747.33, 28,128.10 and 11,256.13 is: 16,888.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.33 : 28,128.10 = 11,256.13 : x
  2. Step 2: Convert to fraction form
    18,747.33/28,128.10 = 11,256.13/x
  3. Step 3: Cross multiply
    18,747.33x = 28,128.10 × 11,256.13
  4. Step 4: Simplify right side
    18,747.33x = 316,613,409.61
  5. Step 5: Solve for x
    x = 316,613,409.61/18,747.33
  6. Step 6: Final answer
    x = 16,888.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.