Home / 21,403.20-32,104.20-9,716.40

Finding the Fourth Proportional to 21,403.20, 32,104.20 and 9,716.40

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Solution

The fourth proportional to 21,403.20, 32,104.20 and 9,716.40 is: 14,574.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.20 : 32,104.20 = 9,716.40 : x
  2. Step 2: Convert to fraction form
    21,403.20/32,104.20 = 9,716.40/x
  3. Step 3: Cross multiply
    21,403.20x = 32,104.20 × 9,716.40
  4. Step 4: Simplify right side
    21,403.20x = 311,937,248.88
  5. Step 5: Solve for x
    x = 311,937,248.88/21,403.20
  6. Step 6: Final answer
    x = 14,574.33

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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.