Home / 21,486.47-32,220.19-11,488.79

Finding the Fourth Proportional to 21,486.47, 32,220.19 and 11,488.79

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Solution

The fourth proportional to 21,486.47, 32,220.19 and 11,488.79 is: 17,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.47 : 32,220.19 = 11,488.79 : x
  2. Step 2: Convert to fraction form
    21,486.47/32,220.19 = 11,488.79/x
  3. Step 3: Cross multiply
    21,486.47x = 32,220.19 × 11,488.79
  4. Step 4: Simplify right side
    21,486.47x = 370,170,996.67
  5. Step 5: Solve for x
    x = 370,170,996.67/21,486.47
  6. Step 6: Final answer
    x = 17,228.10

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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.