Home / 15,903.96-21,947.88-8,831.04

Finding the Fourth Proportional to 15,903.96, 21,947.88 and 8,831.04

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Solution

The fourth proportional to 15,903.96, 21,947.88 and 8,831.04 is: 12,187.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.96 : 21,947.88 = 8,831.04 : x
  2. Step 2: Convert to fraction form
    15,903.96/21,947.88 = 8,831.04/x
  3. Step 3: Cross multiply
    15,903.96x = 21,947.88 × 8,831.04
  4. Step 4: Simplify right side
    15,903.96x = 193,822,606.20
  5. Step 5: Solve for x
    x = 193,822,606.20/15,903.96
  6. Step 6: Final answer
    x = 12,187.07

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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.