Home / 21,381.94-32,079.84-10,287.18

Finding the Fourth Proportional to 21,381.94, 32,079.84 and 10,287.18

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Solution

The fourth proportional to 21,381.94, 32,079.84 and 10,287.18 is: 15,434.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.94 : 32,079.84 = 10,287.18 : x
  2. Step 2: Convert to fraction form
    21,381.94/32,079.84 = 10,287.18/x
  3. Step 3: Cross multiply
    21,381.94x = 32,079.84 × 10,287.18
  4. Step 4: Simplify right side
    21,381.94x = 330,011,088.45
  5. Step 5: Solve for x
    x = 330,011,088.45/21,381.94
  6. Step 6: Final answer
    x = 15,434.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.