Home / 12,810.24-17,678.16-7,145.52

Finding the Fourth Proportional to 12,810.24, 17,678.16 and 7,145.52

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Solution

The fourth proportional to 12,810.24, 17,678.16 and 7,145.52 is: 9,860.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.24 : 17,678.16 = 7,145.52 : x
  2. Step 2: Convert to fraction form
    12,810.24/17,678.16 = 7,145.52/x
  3. Step 3: Cross multiply
    12,810.24x = 17,678.16 × 7,145.52
  4. Step 4: Simplify right side
    12,810.24x = 126,319,645.84
  5. Step 5: Solve for x
    x = 126,319,645.84/12,810.24
  6. Step 6: Final answer
    x = 9,860.83

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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.