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Finding the Fourth Proportional to 11,617, 16,020.60 and 8,960.20

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Solution

The fourth proportional to 11,617, 16,020.60 and 8,960.20 is: 12,356.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,617 : 16,020.60 = 8,960.20 : x
  2. Step 2: Convert to fraction form
    11,617/16,020.60 = 8,960.20/x
  3. Step 3: Cross multiply
    11,617x = 16,020.60 × 8,960.20
  4. Step 4: Simplify right side
    11,617x = 143,547,780.12
  5. Step 5: Solve for x
    x = 143,547,780.12/11,617
  6. Step 6: Final answer
    x = 12,356.70

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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.