Home / 21,994.40-32,959.20-18,689.60

Finding the Fourth Proportional to 21,994.40, 32,959.20 and 18,689.60

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Solution

The fourth proportional to 21,994.40, 32,959.20 and 18,689.60 is: 28,006.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.40 : 32,959.20 = 18,689.60 : x
  2. Step 2: Convert to fraction form
    21,994.40/32,959.20 = 18,689.60/x
  3. Step 3: Cross multiply
    21,994.40x = 32,959.20 × 18,689.60
  4. Step 4: Simplify right side
    21,994.40x = 615,994,264.32
  5. Step 5: Solve for x
    x = 615,994,264.32/21,994.40
  6. Step 6: Final answer
    x = 28,006.87

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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.