Home / 15,401.75-21,254.33-8,328.15

Finding the Fourth Proportional to 15,401.75, 21,254.33 and 8,328.15

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Solution

The fourth proportional to 15,401.75, 21,254.33 and 8,328.15 is: 11,492.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.75 : 21,254.33 = 8,328.15 : x
  2. Step 2: Convert to fraction form
    15,401.75/21,254.33 = 8,328.15/x
  3. Step 3: Cross multiply
    15,401.75x = 21,254.33 × 8,328.15
  4. Step 4: Simplify right side
    15,401.75x = 177,009,269.21
  5. Step 5: Solve for x
    x = 177,009,269.21/15,401.75
  6. Step 6: Final answer
    x = 11,492.81

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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.