Home / 15,507.54-21,401.28-8,433.82

Finding the Fourth Proportional to 15,507.54, 21,401.28 and 8,433.82

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Solution

The fourth proportional to 15,507.54, 21,401.28 and 8,433.82 is: 11,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.54 : 21,401.28 = 8,433.82 : x
  2. Step 2: Convert to fraction form
    15,507.54/21,401.28 = 8,433.82/x
  3. Step 3: Cross multiply
    15,507.54x = 21,401.28 × 8,433.82
  4. Step 4: Simplify right side
    15,507.54x = 180,494,543.29
  5. Step 5: Solve for x
    x = 180,494,543.29/15,507.54
  6. Step 6: Final answer
    x = 11,639.15

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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.