Home / 27,688.04-38,209.38-15,112.76

Finding the Fourth Proportional to 27,688.04, 38,209.38 and 15,112.76

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Solution

The fourth proportional to 27,688.04, 38,209.38 and 15,112.76 is: 20,855.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,688.04 : 38,209.38 = 15,112.76 : x
  2. Step 2: Convert to fraction form
    27,688.04/38,209.38 = 15,112.76/x
  3. Step 3: Cross multiply
    27,688.04x = 38,209.38 × 15,112.76
  4. Step 4: Simplify right side
    27,688.04x = 577,449,189.69
  5. Step 5: Solve for x
    x = 577,449,189.69/27,688.04
  6. Step 6: Final answer
    x = 20,855.55

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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.