Home / 9,915.22-13,683.20-5,438.71

Finding the Fourth Proportional to 9,915.22, 13,683.20 and 5,438.71

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Solution

The fourth proportional to 9,915.22, 13,683.20 and 5,438.71 is: 7,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.22 : 13,683.20 = 5,438.71 : x
  2. Step 2: Convert to fraction form
    9,915.22/13,683.20 = 5,438.71/x
  3. Step 3: Cross multiply
    9,915.22x = 13,683.20 × 5,438.71
  4. Step 4: Simplify right side
    9,915.22x = 74,418,956.67
  5. Step 5: Solve for x
    x = 74,418,956.67/9,915.22
  6. Step 6: Final answer
    x = 7,505.53

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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.