Home / 27,865.10-38,453.68-15,118.53

Finding the Fourth Proportional to 27,865.10, 38,453.68 and 15,118.53

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Solution

The fourth proportional to 27,865.10, 38,453.68 and 15,118.53 is: 20,863.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,865.10 : 38,453.68 = 15,118.53 : x
  2. Step 2: Convert to fraction form
    27,865.10/38,453.68 = 15,118.53/x
  3. Step 3: Cross multiply
    27,865.10x = 38,453.68 × 15,118.53
  4. Step 4: Simplify right side
    27,865.10x = 581,363,114.69
  5. Step 5: Solve for x
    x = 581,363,114.69/27,865.10
  6. Step 6: Final answer
    x = 20,863.49

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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.