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Finding the Fourth Proportional to 17,856.45, 26,780.82 and 7,316.13

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Solution

The fourth proportional to 17,856.45, 26,780.82 and 7,316.13 is: 10,972.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,856.45 : 26,780.82 = 7,316.13 : x
  2. Step 2: Convert to fraction form
    17,856.45/26,780.82 = 7,316.13/x
  3. Step 3: Cross multiply
    17,856.45x = 26,780.82 × 7,316.13
  4. Step 4: Simplify right side
    17,856.45x = 195,931,960.63
  5. Step 5: Solve for x
    x = 195,931,960.63/17,856.45
  6. Step 6: Final answer
    x = 10,972.62

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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.