Home / 15,381.86-21,226.98-8,308.28

Finding the Fourth Proportional to 15,381.86, 21,226.98 and 8,308.28

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Solution

The fourth proportional to 15,381.86, 21,226.98 and 8,308.28 is: 11,465.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.86 : 21,226.98 = 8,308.28 : x
  2. Step 2: Convert to fraction form
    15,381.86/21,226.98 = 8,308.28/x
  3. Step 3: Cross multiply
    15,381.86x = 21,226.98 × 8,308.28
  4. Step 4: Simplify right side
    15,381.86x = 176,359,693.39
  5. Step 5: Solve for x
    x = 176,359,693.39/15,381.86
  6. Step 6: Final answer
    x = 11,465.43

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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.