Home / 21,842.66-30,149.28-18,890.18

Finding the Fourth Proportional to 21,842.66, 30,149.28 and 18,890.18

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Solution

The fourth proportional to 21,842.66, 30,149.28 and 18,890.18 is: 26,073.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,842.66 : 30,149.28 = 18,890.18 : x
  2. Step 2: Convert to fraction form
    21,842.66/30,149.28 = 18,890.18/x
  3. Step 3: Cross multiply
    21,842.66x = 30,149.28 × 18,890.18
  4. Step 4: Simplify right side
    21,842.66x = 569,525,326.07
  5. Step 5: Solve for x
    x = 569,525,326.07/21,842.66
  6. Step 6: Final answer
    x = 26,073.99

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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.