Home / 15,903.84-21,947.12-8,831.52

Finding the Fourth Proportional to 15,903.84, 21,947.12 and 8,831.52

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Solution

The fourth proportional to 15,903.84, 21,947.12 and 8,831.52 is: 12,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.84 : 21,947.12 = 8,831.52 : x
  2. Step 2: Convert to fraction form
    15,903.84/21,947.12 = 8,831.52/x
  3. Step 3: Cross multiply
    15,903.84x = 21,947.12 × 8,831.52
  4. Step 4: Simplify right side
    15,903.84x = 193,826,429.22
  5. Step 5: Solve for x
    x = 193,826,429.22/15,903.84
  6. Step 6: Final answer
    x = 12,187.40

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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.