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Finding the Fourth Proportional to 15,099.48, 22,638.89 and 7,689.60

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Solution

The fourth proportional to 15,099.48, 22,638.89 and 7,689.60 is: 11,529.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.48 : 22,638.89 = 7,689.60 : x
  2. Step 2: Convert to fraction form
    15,099.48/22,638.89 = 7,689.60/x
  3. Step 3: Cross multiply
    15,099.48x = 22,638.89 × 7,689.60
  4. Step 4: Simplify right side
    15,099.48x = 174,083,970.10
  5. Step 5: Solve for x
    x = 174,083,970.10/15,099.48
  6. Step 6: Final answer
    x = 11,529.14

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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.