Home / 27,612.45-38,105.10-15,037.20

Finding the Fourth Proportional to 27,612.45, 38,105.10 and 15,037.20

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Solution

The fourth proportional to 27,612.45, 38,105.10 and 15,037.20 is: 20,751.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,612.45 : 38,105.10 = 15,037.20 : x
  2. Step 2: Convert to fraction form
    27,612.45/38,105.10 = 15,037.20/x
  3. Step 3: Cross multiply
    27,612.45x = 38,105.10 × 15,037.20
  4. Step 4: Simplify right side
    27,612.45x = 572,994,009.72
  5. Step 5: Solve for x
    x = 572,994,009.72/27,612.45
  6. Step 6: Final answer
    x = 20,751.29

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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.