Home / 14,315.20-21,478.26-8,082.25

Finding the Fourth Proportional to 14,315.20, 21,478.26 and 8,082.25

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Solution

The fourth proportional to 14,315.20, 21,478.26 and 8,082.25 is: 12,126.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,315.20 : 21,478.26 = 8,082.25 : x
  2. Step 2: Convert to fraction form
    14,315.20/21,478.26 = 8,082.25/x
  3. Step 3: Cross multiply
    14,315.20x = 21,478.26 × 8,082.25
  4. Step 4: Simplify right side
    14,315.20x = 173,592,643.50
  5. Step 5: Solve for x
    x = 173,592,643.50/14,315.20
  6. Step 6: Final answer
    x = 12,126.46

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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.