Home / 11,143.96-15,378.33-6,108.07

Finding the Fourth Proportional to 11,143.96, 15,378.33 and 6,108.07

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Solution

The fourth proportional to 11,143.96, 15,378.33 and 6,108.07 is: 8,428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.96 : 15,378.33 = 6,108.07 : x
  2. Step 2: Convert to fraction form
    11,143.96/15,378.33 = 6,108.07/x
  3. Step 3: Cross multiply
    11,143.96x = 15,378.33 × 6,108.07
  4. Step 4: Simplify right side
    11,143.96x = 93,931,916.12
  5. Step 5: Solve for x
    x = 93,931,916.12/11,143.96
  6. Step 6: Final answer
    x = 8,428.95

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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.