Home / 21,287.17-31,897.79-14,626.84

Finding the Fourth Proportional to 21,287.17, 31,897.79 and 14,626.84

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Solution

The fourth proportional to 21,287.17, 31,897.79 and 14,626.84 is: 21,917.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.17 : 31,897.79 = 14,626.84 : x
  2. Step 2: Convert to fraction form
    21,287.17/31,897.79 = 14,626.84/x
  3. Step 3: Cross multiply
    21,287.17x = 31,897.79 × 14,626.84
  4. Step 4: Simplify right side
    21,287.17x = 466,563,870.68
  5. Step 5: Solve for x
    x = 466,563,870.68/21,287.17
  6. Step 6: Final answer
    x = 21,917.61

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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.