Home / 21,920.10-32,880.15-14,921.70

Finding the Fourth Proportional to 21,920.10, 32,880.15 and 14,921.70

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Solution

The fourth proportional to 21,920.10, 32,880.15 and 14,921.70 is: 22,382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.10 : 32,880.15 = 14,921.70 : x
  2. Step 2: Convert to fraction form
    21,920.10/32,880.15 = 14,921.70/x
  3. Step 3: Cross multiply
    21,920.10x = 32,880.15 × 14,921.70
  4. Step 4: Simplify right side
    21,920.10x = 490,627,734.26
  5. Step 5: Solve for x
    x = 490,627,734.26/21,920.10
  6. Step 6: Final answer
    x = 22,382.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.