Home / 15,720.57-23,583.20-5,191.71

Finding the Fourth Proportional to 15,720.57, 23,583.20 and 5,191.71

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Solution

The fourth proportional to 15,720.57, 23,583.20 and 5,191.71 is: 7,788.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.57 : 23,583.20 = 5,191.71 : x
  2. Step 2: Convert to fraction form
    15,720.57/23,583.20 = 5,191.71/x
  3. Step 3: Cross multiply
    15,720.57x = 23,583.20 × 5,191.71
  4. Step 4: Simplify right side
    15,720.57x = 122,437,017.36
  5. Step 5: Solve for x
    x = 122,437,017.36/15,720.57
  6. Step 6: Final answer
    x = 7,788.33

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1.5x scale

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.