Home / 15,515.89-23,255.60-7,178.29

Finding the Fourth Proportional to 15,515.89, 23,255.60 and 7,178.29

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Solution

The fourth proportional to 15,515.89, 23,255.60 and 7,178.29 is: 10,759.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.89 : 23,255.60 = 7,178.29 : x
  2. Step 2: Convert to fraction form
    15,515.89/23,255.60 = 7,178.29/x
  3. Step 3: Cross multiply
    15,515.89x = 23,255.60 × 7,178.29
  4. Step 4: Simplify right side
    15,515.89x = 166,935,467.84
  5. Step 5: Solve for x
    x = 166,935,467.84/15,515.89
  6. Step 6: Final answer
    x = 10,759.00

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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.