Home / 27,959.30-38,583.51-20,821.16

Finding the Fourth Proportional to 27,959.30, 38,583.51 and 20,821.16

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Solution

The fourth proportional to 27,959.30, 38,583.51 and 20,821.16 is: 28,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,959.30 : 38,583.51 = 20,821.16 : x
  2. Step 2: Convert to fraction form
    27,959.30/38,583.51 = 20,821.16/x
  3. Step 3: Cross multiply
    27,959.30x = 38,583.51 × 20,821.16
  4. Step 4: Simplify right side
    27,959.30x = 803,353,435.07
  5. Step 5: Solve for x
    x = 803,353,435.07/27,959.30
  6. Step 6: Final answer
    x = 28,732.96

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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.