Home / 20,269.10-27,971.10-11,316.76

Finding the Fourth Proportional to 20,269.10, 27,971.10 and 11,316.76

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Solution

The fourth proportional to 20,269.10, 27,971.10 and 11,316.76 is: 15,616.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.10 : 27,971.10 = 11,316.76 : x
  2. Step 2: Convert to fraction form
    20,269.10/27,971.10 = 11,316.76/x
  3. Step 3: Cross multiply
    20,269.10x = 27,971.10 × 11,316.76
  4. Step 4: Simplify right side
    20,269.10x = 316,542,155.71
  5. Step 5: Solve for x
    x = 316,542,155.71/20,269.10
  6. Step 6: Final answer
    x = 15,616.98

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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.