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Finding the Fourth Proportional to 15,969.69, 22,038.16 and 8,799.70

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Solution

The fourth proportional to 15,969.69, 22,038.16 and 8,799.70 is: 12,143.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,969.69 : 22,038.16 = 8,799.70 : x
  2. Step 2: Convert to fraction form
    15,969.69/22,038.16 = 8,799.70/x
  3. Step 3: Cross multiply
    15,969.69x = 22,038.16 × 8,799.70
  4. Step 4: Simplify right side
    15,969.69x = 193,929,152.55
  5. Step 5: Solve for x
    x = 193,929,152.55/15,969.69
  6. Step 6: Final answer
    x = 12,143.58

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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.