Home / 10,257.66-15,381.01-5,315.04

Finding the Fourth Proportional to 10,257.66, 15,381.01 and 5,315.04

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Solution

The fourth proportional to 10,257.66, 15,381.01 and 5,315.04 is: 7,969.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,257.66 : 15,381.01 = 5,315.04 : x
  2. Step 2: Convert to fraction form
    10,257.66/15,381.01 = 5,315.04/x
  3. Step 3: Cross multiply
    10,257.66x = 15,381.01 × 5,315.04
  4. Step 4: Simplify right side
    10,257.66x = 81,750,683.39
  5. Step 5: Solve for x
    x = 81,750,683.39/10,257.66
  6. Step 6: Final answer
    x = 7,969.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.