Home / 11,142.56-15,376.84-6,426.95

Finding the Fourth Proportional to 11,142.56, 15,376.84 and 6,426.95

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Solution

The fourth proportional to 11,142.56, 15,376.84 and 6,426.95 is: 8,869.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,142.56 : 15,376.84 = 6,426.95 : x
  2. Step 2: Convert to fraction form
    11,142.56/15,376.84 = 6,426.95/x
  3. Step 3: Cross multiply
    11,142.56x = 15,376.84 × 6,426.95
  4. Step 4: Simplify right side
    11,142.56x = 98,826,088.89
  5. Step 5: Solve for x
    x = 98,826,088.89/11,142.56
  6. Step 6: Final answer
    x = 8,869.24

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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.