Home / 27,780.15-38,327.08-15,834.87

Finding the Fourth Proportional to 27,780.15, 38,327.08 and 15,834.87

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Solution

The fourth proportional to 27,780.15, 38,327.08 and 15,834.87 is: 21,846.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.15 : 38,327.08 = 15,834.87 : x
  2. Step 2: Convert to fraction form
    27,780.15/38,327.08 = 15,834.87/x
  3. Step 3: Cross multiply
    27,780.15x = 38,327.08 × 15,834.87
  4. Step 4: Simplify right side
    27,780.15x = 606,904,250.11
  5. Step 5: Solve for x
    x = 606,904,250.11/27,780.15
  6. Step 6: Final answer
    x = 21,846.69

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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.