Home / 18,412.16-25,404.36-10,857.90

Finding the Fourth Proportional to 18,412.16, 25,404.36 and 10,857.90

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Solution

The fourth proportional to 18,412.16, 25,404.36 and 10,857.90 is: 14,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.16 : 25,404.36 = 10,857.90 : x
  2. Step 2: Convert to fraction form
    18,412.16/25,404.36 = 10,857.90/x
  3. Step 3: Cross multiply
    18,412.16x = 25,404.36 × 10,857.90
  4. Step 4: Simplify right side
    18,412.16x = 275,838,000.44
  5. Step 5: Solve for x
    x = 275,838,000.44/18,412.16
  6. Step 6: Final answer
    x = 14,981.29

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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.