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Finding the Fourth Proportional to 15,588.52, 21,510.88 and 8,783.11

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Solution

The fourth proportional to 15,588.52, 21,510.88 and 8,783.11 is: 12,119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588.52 : 21,510.88 = 8,783.11 : x
  2. Step 2: Convert to fraction form
    15,588.52/21,510.88 = 8,783.11/x
  3. Step 3: Cross multiply
    15,588.52x = 21,510.88 × 8,783.11
  4. Step 4: Simplify right side
    15,588.52x = 188,932,425.24
  5. Step 5: Solve for x
    x = 188,932,425.24/15,588.52
  6. Step 6: Final answer
    x = 12,119.97

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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.