Home / 15,353.76-21,182.19-8,637.87

Finding the Fourth Proportional to 15,353.76, 21,182.19 and 8,637.87

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Solution

The fourth proportional to 15,353.76, 21,182.19 and 8,637.87 is: 11,916.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,353.76 : 21,182.19 = 8,637.87 : x
  2. Step 2: Convert to fraction form
    15,353.76/21,182.19 = 8,637.87/x
  3. Step 3: Cross multiply
    15,353.76x = 21,182.19 × 8,637.87
  4. Step 4: Simplify right side
    15,353.76x = 182,969,003.54
  5. Step 5: Solve for x
    x = 182,969,003.54/15,353.76
  6. Step 6: Final answer
    x = 11,916.89

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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.