Home / 21,176.40-31,726.20-17,259.60

Finding the Fourth Proportional to 21,176.40, 31,726.20 and 17,259.60

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Solution

The fourth proportional to 21,176.40, 31,726.20 and 17,259.60 is: 25,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.40 : 31,726.20 = 17,259.60 : x
  2. Step 2: Convert to fraction form
    21,176.40/31,726.20 = 17,259.60/x
  3. Step 3: Cross multiply
    21,176.40x = 31,726.20 × 17,259.60
  4. Step 4: Simplify right side
    21,176.40x = 547,581,521.52
  5. Step 5: Solve for x
    x = 547,581,521.52/21,176.40
  6. Step 6: Final answer
    x = 25,858.10

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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.