Home / 10,387.36-14,331.18-6,138.58

Finding the Fourth Proportional to 10,387.36, 14,331.18 and 6,138.58

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Solution

The fourth proportional to 10,387.36, 14,331.18 and 6,138.58 is: 8,469.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.36 : 14,331.18 = 6,138.58 : x
  2. Step 2: Convert to fraction form
    10,387.36/14,331.18 = 6,138.58/x
  3. Step 3: Cross multiply
    10,387.36x = 14,331.18 × 6,138.58
  4. Step 4: Simplify right side
    10,387.36x = 87,973,094.92
  5. Step 5: Solve for x
    x = 87,973,094.92/10,387.36
  6. Step 6: Final answer
    x = 8,469.24

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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.