Home / 15,440.40-21,307.68-8,366.76

Finding the Fourth Proportional to 15,440.40, 21,307.68 and 8,366.76

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Solution

The fourth proportional to 15,440.40, 21,307.68 and 8,366.76 is: 11,546.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.40 : 21,307.68 = 8,366.76 : x
  2. Step 2: Convert to fraction form
    15,440.40/21,307.68 = 8,366.76/x
  3. Step 3: Cross multiply
    15,440.40x = 21,307.68 × 8,366.76
  4. Step 4: Simplify right side
    15,440.40x = 178,276,244.72
  5. Step 5: Solve for x
    x = 178,276,244.72/15,440.40
  6. Step 6: Final answer
    x = 11,546.09

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Half scale
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Double scale
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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.