Home / 12,430.31-17,133.92-8,395.88

Finding the Fourth Proportional to 12,430.31, 17,133.92 and 8,395.88

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Solution

The fourth proportional to 12,430.31, 17,133.92 and 8,395.88 is: 11,572.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.31 : 17,133.92 = 8,395.88 : x
  2. Step 2: Convert to fraction form
    12,430.31/17,133.92 = 8,395.88/x
  3. Step 3: Cross multiply
    12,430.31x = 17,133.92 × 8,395.88
  4. Step 4: Simplify right side
    12,430.31x = 143,854,336.25
  5. Step 5: Solve for x
    x = 143,854,336.25/12,430.31
  6. Step 6: Final answer
    x = 11,572.87

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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.