Home / 15,401.71-21,253.92-8,687.27

Finding the Fourth Proportional to 15,401.71, 21,253.92 and 8,687.27

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Solution

The fourth proportional to 15,401.71, 21,253.92 and 8,687.27 is: 11,988.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.71 : 21,253.92 = 8,687.27 : x
  2. Step 2: Convert to fraction form
    15,401.71/21,253.92 = 8,687.27/x
  3. Step 3: Cross multiply
    15,401.71x = 21,253.92 × 8,687.27
  4. Step 4: Simplify right side
    15,401.71x = 184,638,541.60
  5. Step 5: Solve for x
    x = 184,638,541.60/15,401.71
  6. Step 6: Final answer
    x = 11,988.18

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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.