Home / 21,913.17-32,878.68-10,219.20

Finding the Fourth Proportional to 21,913.17, 32,878.68 and 10,219.20

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Solution

The fourth proportional to 21,913.17, 32,878.68 and 10,219.20 is: 15,332.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.17 : 32,878.68 = 10,219.20 : x
  2. Step 2: Convert to fraction form
    21,913.17/32,878.68 = 10,219.20/x
  3. Step 3: Cross multiply
    21,913.17x = 32,878.68 × 10,219.20
  4. Step 4: Simplify right side
    21,913.17x = 335,993,806.66
  5. Step 5: Solve for x
    x = 335,993,806.66/21,913.17
  6. Step 6: Final answer
    x = 15,332.96

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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.