Home / 15,402.03-21,254.33-8,687.56

Finding the Fourth Proportional to 15,402.03, 21,254.33 and 8,687.56

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Solution

The fourth proportional to 15,402.03, 21,254.33 and 8,687.56 is: 11,988.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,402.03 : 21,254.33 = 8,687.56 : x
  2. Step 2: Convert to fraction form
    15,402.03/21,254.33 = 8,687.56/x
  3. Step 3: Cross multiply
    15,402.03x = 21,254.33 × 8,687.56
  4. Step 4: Simplify right side
    15,402.03x = 184,648,223.70
  5. Step 5: Solve for x
    x = 184,648,223.70/15,402.03
  6. Step 6: Final answer
    x = 11,988.56

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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.