Home / 10,918.50-16,378.08-3,127.32

Finding the Fourth Proportional to 10,918.50, 16,378.08 and 3,127.32

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Solution

The fourth proportional to 10,918.50, 16,378.08 and 3,127.32 is: 4,691.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.50 : 16,378.08 = 3,127.32 : x
  2. Step 2: Convert to fraction form
    10,918.50/16,378.08 = 3,127.32/x
  3. Step 3: Cross multiply
    10,918.50x = 16,378.08 × 3,127.32
  4. Step 4: Simplify right side
    10,918.50x = 51,219,497.15
  5. Step 5: Solve for x
    x = 51,219,497.15/10,918.50
  6. Step 6: Final answer
    x = 4,691.07

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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.