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Finding the Fourth Proportional to 15,809.40, 21,817.62 and 9,095.04

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Solution

The fourth proportional to 15,809.40, 21,817.62 and 9,095.04 is: 12,551.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.40 : 21,817.62 = 9,095.04 : x
  2. Step 2: Convert to fraction form
    15,809.40/21,817.62 = 9,095.04/x
  3. Step 3: Cross multiply
    15,809.40x = 21,817.62 × 9,095.04
  4. Step 4: Simplify right side
    15,809.40x = 198,432,126.60
  5. Step 5: Solve for x
    x = 198,432,126.60/15,809.40
  6. Step 6: Final answer
    x = 12,551.53

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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.