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Finding the Fourth Proportional to 15,769.65, 21,763.98 and 9,055.56

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Solution

The fourth proportional to 15,769.65, 21,763.98 and 9,055.56 is: 12,497.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.65 : 21,763.98 = 9,055.56 : x
  2. Step 2: Convert to fraction form
    15,769.65/21,763.98 = 9,055.56/x
  3. Step 3: Cross multiply
    15,769.65x = 21,763.98 × 9,055.56
  4. Step 4: Simplify right side
    15,769.65x = 197,085,026.73
  5. Step 5: Solve for x
    x = 197,085,026.73/15,769.65
  6. Step 6: Final answer
    x = 12,497.74

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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.