Home / 20,284.25-28,005.29-13,125.16

Finding the Fourth Proportional to 20,284.25, 28,005.29 and 13,125.16

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Solution

The fourth proportional to 20,284.25, 28,005.29 and 13,125.16 is: 18,121.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.25 : 28,005.29 = 13,125.16 : x
  2. Step 2: Convert to fraction form
    20,284.25/28,005.29 = 13,125.16/x
  3. Step 3: Cross multiply
    20,284.25x = 28,005.29 × 13,125.16
  4. Step 4: Simplify right side
    20,284.25x = 367,574,083.29
  5. Step 5: Solve for x
    x = 367,574,083.29/20,284.25
  6. Step 6: Final answer
    x = 18,121.16

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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.