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Finding the Fourth Proportional to 15,483.79, 21,367.86 and 8,769.25

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Solution

The fourth proportional to 15,483.79, 21,367.86 and 8,769.25 is: 12,101.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.79 : 21,367.86 = 8,769.25 : x
  2. Step 2: Convert to fraction form
    15,483.79/21,367.86 = 8,769.25/x
  3. Step 3: Cross multiply
    15,483.79x = 21,367.86 × 8,769.25
  4. Step 4: Simplify right side
    15,483.79x = 187,380,106.31
  5. Step 5: Solve for x
    x = 187,380,106.31/15,483.79
  6. Step 6: Final answer
    x = 12,101.70

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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.