Home / 21,988.08-30,325.92-19,329.84

Finding the Fourth Proportional to 21,988.08, 30,325.92 and 19,329.84

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Solution

The fourth proportional to 21,988.08, 30,325.92 and 19,329.84 is: 26,659.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.08 : 30,325.92 = 19,329.84 : x
  2. Step 2: Convert to fraction form
    21,988.08/30,325.92 = 19,329.84/x
  3. Step 3: Cross multiply
    21,988.08x = 30,325.92 × 19,329.84
  4. Step 4: Simplify right side
    21,988.08x = 586,195,181.45
  5. Step 5: Solve for x
    x = 586,195,181.45/21,988.08
  6. Step 6: Final answer
    x = 26,659.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.