Home / 20,321.29-28,044.26-11,368.81

Finding the Fourth Proportional to 20,321.29, 28,044.26 and 11,368.81

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Solution

The fourth proportional to 20,321.29, 28,044.26 and 11,368.81 is: 15,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.29 : 28,044.26 = 11,368.81 : x
  2. Step 2: Convert to fraction form
    20,321.29/28,044.26 = 11,368.81/x
  3. Step 3: Cross multiply
    20,321.29x = 28,044.26 × 11,368.81
  4. Step 4: Simplify right side
    20,321.29x = 318,829,863.53
  5. Step 5: Solve for x
    x = 318,829,863.53/20,321.29
  6. Step 6: Final answer
    x = 15,689.45

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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.