Home / 10,956.61-15,120.71-6,242.41

Finding the Fourth Proportional to 10,956.61, 15,120.71 and 6,242.41

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Solution

The fourth proportional to 10,956.61, 15,120.71 and 6,242.41 is: 8,614.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.61 : 15,120.71 = 6,242.41 : x
  2. Step 2: Convert to fraction form
    10,956.61/15,120.71 = 6,242.41/x
  3. Step 3: Cross multiply
    10,956.61x = 15,120.71 × 6,242.41
  4. Step 4: Simplify right side
    10,956.61x = 94,389,671.31
  5. Step 5: Solve for x
    x = 94,389,671.31/10,956.61
  6. Step 6: Final answer
    x = 8,614.86

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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.