Home / 15,717.34-21,690.19-9,003.55

Finding the Fourth Proportional to 15,717.34, 21,690.19 and 9,003.55

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Solution

The fourth proportional to 15,717.34, 21,690.19 and 9,003.55 is: 12,425.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,717.34 : 21,690.19 = 9,003.55 : x
  2. Step 2: Convert to fraction form
    15,717.34/21,690.19 = 9,003.55/x
  3. Step 3: Cross multiply
    15,717.34x = 21,690.19 × 9,003.55
  4. Step 4: Simplify right side
    15,717.34x = 195,288,665.16
  5. Step 5: Solve for x
    x = 195,288,665.16/15,717.34
  6. Step 6: Final answer
    x = 12,425.05

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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.