Home / 10,440.14-14,399.42-8,987.36

Finding the Fourth Proportional to 10,440.14, 14,399.42 and 8,987.36

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Solution

The fourth proportional to 10,440.14, 14,399.42 and 8,987.36 is: 12,395.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.14 : 14,399.42 = 8,987.36 : x
  2. Step 2: Convert to fraction form
    10,440.14/14,399.42 = 8,987.36/x
  3. Step 3: Cross multiply
    10,440.14x = 14,399.42 × 8,987.36
  4. Step 4: Simplify right side
    10,440.14x = 129,412,829.80
  5. Step 5: Solve for x
    x = 129,412,829.80/10,440.14
  6. Step 6: Final answer
    x = 12,395.70

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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.