Home / 22,219.28-30,661.48-12,281.36

Finding the Fourth Proportional to 22,219.28, 30,661.48 and 12,281.36

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Solution

The fourth proportional to 22,219.28, 30,661.48 and 12,281.36 is: 16,947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,219.28 : 30,661.48 = 12,281.36 : x
  2. Step 2: Convert to fraction form
    22,219.28/30,661.48 = 12,281.36/x
  3. Step 3: Cross multiply
    22,219.28x = 30,661.48 × 12,281.36
  4. Step 4: Simplify right side
    22,219.28x = 376,564,674.01
  5. Step 5: Solve for x
    x = 376,564,674.01/22,219.28
  6. Step 6: Final answer
    x = 16,947.65

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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.