Home / 10,429.19-15,625.49-8,685.42

Finding the Fourth Proportional to 10,429.19, 15,625.49 and 8,685.42

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Solution

The fourth proportional to 10,429.19, 15,625.49 and 8,685.42 is: 13,012.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.19 : 15,625.49 = 8,685.42 : x
  2. Step 2: Convert to fraction form
    10,429.19/15,625.49 = 8,685.42/x
  3. Step 3: Cross multiply
    10,429.19x = 15,625.49 × 8,685.42
  4. Step 4: Simplify right side
    10,429.19x = 135,713,943.36
  5. Step 5: Solve for x
    x = 135,713,943.36/10,429.19
  6. Step 6: Final answer
    x = 13,012.89

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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.