Home / 15,478.49-21,360.76-8,765.16

Finding the Fourth Proportional to 15,478.49, 21,360.76 and 8,765.16

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Solution

The fourth proportional to 15,478.49, 21,360.76 and 8,765.16 is: 12,096.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.49 : 21,360.76 = 8,765.16 : x
  2. Step 2: Convert to fraction form
    15,478.49/21,360.76 = 8,765.16/x
  3. Step 3: Cross multiply
    15,478.49x = 21,360.76 × 8,765.16
  4. Step 4: Simplify right side
    15,478.49x = 187,230,546.56
  5. Step 5: Solve for x
    x = 187,230,546.56/15,478.49
  6. Step 6: Final answer
    x = 12,096.17

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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.