Home / 21,814.24-32,718.12-7,960

Finding the Fourth Proportional to 21,814.24, 32,718.12 and 7,960

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Solution

The fourth proportional to 21,814.24, 32,718.12 and 7,960 is: 11,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.24 : 32,718.12 = 7,960 : x
  2. Step 2: Convert to fraction form
    21,814.24/32,718.12 = 7,960/x
  3. Step 3: Cross multiply
    21,814.24x = 32,718.12 × 7,960
  4. Step 4: Simplify right side
    21,814.24x = 260,436,235.20
  5. Step 5: Solve for x
    x = 260,436,235.20/21,814.24
  6. Step 6: Final answer
    x = 11,938.82

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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.