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Finding the Fourth Proportional to 11,310.98, 15,605.99 and 8,913.52

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Solution

The fourth proportional to 11,310.98, 15,605.99 and 8,913.52 is: 12,298.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.98 : 15,605.99 = 8,913.52 : x
  2. Step 2: Convert to fraction form
    11,310.98/15,605.99 = 8,913.52/x
  3. Step 3: Cross multiply
    11,310.98x = 15,605.99 × 8,913.52
  4. Step 4: Simplify right side
    11,310.98x = 139,104,248.24
  5. Step 5: Solve for x
    x = 139,104,248.24/11,310.98
  6. Step 6: Final answer
    x = 12,298.16

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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.