Home / 15,905.04-21,947.94-8,831.46

Finding the Fourth Proportional to 15,905.04, 21,947.94 and 8,831.46

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Solution

The fourth proportional to 15,905.04, 21,947.94 and 8,831.46 is: 12,186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.04 : 21,947.94 = 8,831.46 : x
  2. Step 2: Convert to fraction form
    15,905.04/21,947.94 = 8,831.46/x
  3. Step 3: Cross multiply
    15,905.04x = 21,947.94 × 8,831.46
  4. Step 4: Simplify right side
    15,905.04x = 193,832,354.19
  5. Step 5: Solve for x
    x = 193,832,354.19/15,905.04
  6. Step 6: Final answer
    x = 12,186.85

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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.