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Finding the Fourth Proportional to 15,583.96, 21,505.80 and 8,510.41

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Solution

The fourth proportional to 15,583.96, 21,505.80 and 8,510.41 is: 11,744.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,583.96 : 21,505.80 = 8,510.41 : x
  2. Step 2: Convert to fraction form
    15,583.96/21,505.80 = 8,510.41/x
  3. Step 3: Cross multiply
    15,583.96x = 21,505.80 × 8,510.41
  4. Step 4: Simplify right side
    15,583.96x = 183,023,175.38
  5. Step 5: Solve for x
    x = 183,023,175.38/15,583.96
  6. Step 6: Final answer
    x = 11,744.33

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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.