Home / 18,421.14-25,420.50-10,867.80

Finding the Fourth Proportional to 18,421.14, 25,420.50 and 10,867.80

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Solution

The fourth proportional to 18,421.14, 25,420.50 and 10,867.80 is: 14,997.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.14 : 25,420.50 = 10,867.80 : x
  2. Step 2: Convert to fraction form
    18,421.14/25,420.50 = 10,867.80/x
  3. Step 3: Cross multiply
    18,421.14x = 25,420.50 × 10,867.80
  4. Step 4: Simplify right side
    18,421.14x = 276,264,909.90
  5. Step 5: Solve for x
    x = 276,264,909.90/18,421.14
  6. Step 6: Final answer
    x = 14,997.17

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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.