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Finding the Fourth Proportional to 15,757.80, 23,636.70 and 8,831.40

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Solution

The fourth proportional to 15,757.80, 23,636.70 and 8,831.40 is: 13,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,757.80 : 23,636.70 = 8,831.40 : x
  2. Step 2: Convert to fraction form
    15,757.80/23,636.70 = 8,831.40/x
  3. Step 3: Cross multiply
    15,757.80x = 23,636.70 × 8,831.40
  4. Step 4: Simplify right side
    15,757.80x = 208,745,152.38
  5. Step 5: Solve for x
    x = 208,745,152.38/15,757.80
  6. Step 6: Final answer
    x = 13,247.10

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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.