Home / 21,979.86-32,979.35-10,880.22

Finding the Fourth Proportional to 21,979.86, 32,979.35 and 10,880.22

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Solution

The fourth proportional to 21,979.86, 32,979.35 and 10,880.22 is: 16,325.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.86 : 32,979.35 = 10,880.22 : x
  2. Step 2: Convert to fraction form
    21,979.86/32,979.35 = 10,880.22/x
  3. Step 3: Cross multiply
    21,979.86x = 32,979.35 × 10,880.22
  4. Step 4: Simplify right side
    21,979.86x = 358,822,734.33
  5. Step 5: Solve for x
    x = 358,822,734.33/21,979.86
  6. Step 6: Final answer
    x = 16,325.07

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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.