Home / 27,053.94-37,382.13-20,820.18

Finding the Fourth Proportional to 27,053.94, 37,382.13 and 20,820.18

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Solution

The fourth proportional to 27,053.94, 37,382.13 and 20,820.18 is: 28,768.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,053.94 : 37,382.13 = 20,820.18 : x
  2. Step 2: Convert to fraction form
    27,053.94/37,382.13 = 20,820.18/x
  3. Step 3: Cross multiply
    27,053.94x = 37,382.13 × 20,820.18
  4. Step 4: Simplify right side
    27,053.94x = 778,302,675.38
  5. Step 5: Solve for x
    x = 778,302,675.38/27,053.94
  6. Step 6: Final answer
    x = 28,768.55

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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.