Home / 28,501.25-42,696.52-13,720.55

Finding the Fourth Proportional to 28,501.25, 42,696.52 and 13,720.55

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Solution

The fourth proportional to 28,501.25, 42,696.52 and 13,720.55 is: 20,554.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501.25 : 42,696.52 = 13,720.55 : x
  2. Step 2: Convert to fraction form
    28,501.25/42,696.52 = 13,720.55/x
  3. Step 3: Cross multiply
    28,501.25x = 42,696.52 × 13,720.55
  4. Step 4: Simplify right side
    28,501.25x = 585,819,489.70
  5. Step 5: Solve for x
    x = 585,819,489.70/28,501.25
  6. Step 6: Final answer
    x = 20,554.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.