Home / 15,279.96-21,082.32-8,817.99

Finding the Fourth Proportional to 15,279.96, 21,082.32 and 8,817.99

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Solution

The fourth proportional to 15,279.96, 21,082.32 and 8,817.99 is: 12,166.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.96 : 21,082.32 = 8,817.99 : x
  2. Step 2: Convert to fraction form
    15,279.96/21,082.32 = 8,817.99/x
  3. Step 3: Cross multiply
    15,279.96x = 21,082.32 × 8,817.99
  4. Step 4: Simplify right side
    15,279.96x = 185,903,686.94
  5. Step 5: Solve for x
    x = 185,903,686.94/15,279.96
  6. Step 6: Final answer
    x = 12,166.50

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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.