Home / 10,387.36-14,349.72-8,987.68

Finding the Fourth Proportional to 10,387.36, 14,349.72 and 8,987.68

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Solution

The fourth proportional to 10,387.36, 14,349.72 and 8,987.68 is: 12,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.36 : 14,349.72 = 8,987.68 : x
  2. Step 2: Convert to fraction form
    10,387.36/14,349.72 = 8,987.68/x
  3. Step 3: Cross multiply
    10,387.36x = 14,349.72 × 8,987.68
  4. Step 4: Simplify right side
    10,387.36x = 128,970,691.45
  5. Step 5: Solve for x
    x = 128,970,691.45/10,387.36
  6. Step 6: Final answer
    x = 12,416.12

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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.