Home / 15,786.12-23,678.76-5,791.20

Finding the Fourth Proportional to 15,786.12, 23,678.76 and 5,791.20

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Solution

The fourth proportional to 15,786.12, 23,678.76 and 5,791.20 is: 8,686.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786.12 : 23,678.76 = 5,791.20 : x
  2. Step 2: Convert to fraction form
    15,786.12/23,678.76 = 5,791.20/x
  3. Step 3: Cross multiply
    15,786.12x = 23,678.76 × 5,791.20
  4. Step 4: Simplify right side
    15,786.12x = 137,128,434.91
  5. Step 5: Solve for x
    x = 137,128,434.91/15,786.12
  6. Step 6: Final answer
    x = 8,686.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.