Home / 15,286.29-21,086.14-9,612.05

Finding the Fourth Proportional to 15,286.29, 21,086.14 and 9,612.05

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Solution

The fourth proportional to 15,286.29, 21,086.14 and 9,612.05 is: 13,259.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.29 : 21,086.14 = 9,612.05 : x
  2. Step 2: Convert to fraction form
    15,286.29/21,086.14 = 9,612.05/x
  3. Step 3: Cross multiply
    15,286.29x = 21,086.14 × 9,612.05
  4. Step 4: Simplify right side
    15,286.29x = 202,680,983.93
  5. Step 5: Solve for x
    x = 202,680,983.93/15,286.29
  6. Step 6: Final answer
    x = 13,259.01

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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.