Home / 21,079.42-31,619.01-8,599.38

Finding the Fourth Proportional to 21,079.42, 31,619.01 and 8,599.38

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Solution

The fourth proportional to 21,079.42, 31,619.01 and 8,599.38 is: 12,899.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.42 : 31,619.01 = 8,599.38 : x
  2. Step 2: Convert to fraction form
    21,079.42/31,619.01 = 8,599.38/x
  3. Step 3: Cross multiply
    21,079.42x = 31,619.01 × 8,599.38
  4. Step 4: Simplify right side
    21,079.42x = 271,903,882.21
  5. Step 5: Solve for x
    x = 271,903,882.21/21,079.42
  6. Step 6: Final answer
    x = 12,899.02

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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.