Home / 21,920.08-32,881.92-7,125.16

Finding the Fourth Proportional to 21,920.08, 32,881.92 and 7,125.16

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Solution

The fourth proportional to 21,920.08, 32,881.92 and 7,125.16 is: 10,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.08 : 32,881.92 = 7,125.16 : x
  2. Step 2: Convert to fraction form
    21,920.08/32,881.92 = 7,125.16/x
  3. Step 3: Cross multiply
    21,920.08x = 32,881.92 × 7,125.16
  4. Step 4: Simplify right side
    21,920.08x = 234,288,941.11
  5. Step 5: Solve for x
    x = 234,288,941.11/21,920.08
  6. Step 6: Final answer
    x = 10,688.33

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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.