Home / 20,983.29-28,955.17-12,028.74

Finding the Fourth Proportional to 20,983.29, 28,955.17 and 12,028.74

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Solution

The fourth proportional to 20,983.29, 28,955.17 and 12,028.74 is: 16,598.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.29 : 28,955.17 = 12,028.74 : x
  2. Step 2: Convert to fraction form
    20,983.29/28,955.17 = 12,028.74/x
  3. Step 3: Cross multiply
    20,983.29x = 28,955.17 × 12,028.74
  4. Step 4: Simplify right side
    20,983.29x = 348,294,211.59
  5. Step 5: Solve for x
    x = 348,294,211.59/20,983.29
  6. Step 6: Final answer
    x = 16,598.65

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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.