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Finding the Fourth Proportional to 15,095.50, 20,831.82 and 8,808.28

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Solution

The fourth proportional to 15,095.50, 20,831.82 and 8,808.28 is: 12,155.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,095.50 : 20,831.82 = 8,808.28 : x
  2. Step 2: Convert to fraction form
    15,095.50/20,831.82 = 8,808.28/x
  3. Step 3: Cross multiply
    15,095.50x = 20,831.82 × 8,808.28
  4. Step 4: Simplify right side
    15,095.50x = 183,492,503.47
  5. Step 5: Solve for x
    x = 183,492,503.47/15,095.50
  6. Step 6: Final answer
    x = 12,155.44

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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.