Home / 15,918.85-21,968.42-8,748.72

Finding the Fourth Proportional to 15,918.85, 21,968.42 and 8,748.72

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Solution

The fourth proportional to 15,918.85, 21,968.42 and 8,748.72 is: 12,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.85 : 21,968.42 = 8,748.72 : x
  2. Step 2: Convert to fraction form
    15,918.85/21,968.42 = 8,748.72/x
  3. Step 3: Cross multiply
    15,918.85x = 21,968.42 × 8,748.72
  4. Step 4: Simplify right side
    15,918.85x = 192,195,555.42
  5. Step 5: Solve for x
    x = 192,195,555.42/15,918.85
  6. Step 6: Final answer
    x = 12,073.46

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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.