Home / 15,381.76-21,226.84-8,308.18

Finding the Fourth Proportional to 15,381.76, 21,226.84 and 8,308.18

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Solution

The fourth proportional to 15,381.76, 21,226.84 and 8,308.18 is: 11,465.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.76 : 21,226.84 = 8,308.18 : x
  2. Step 2: Convert to fraction form
    15,381.76/21,226.84 = 8,308.18/x
  3. Step 3: Cross multiply
    15,381.76x = 21,226.84 × 8,308.18
  4. Step 4: Simplify right side
    15,381.76x = 176,356,407.55
  5. Step 5: Solve for x
    x = 176,356,407.55/15,381.76
  6. Step 6: Final answer
    x = 11,465.29

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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.