Home / 9,915.63-13,683.92-5,439.39

Finding the Fourth Proportional to 9,915.63, 13,683.92 and 5,439.39

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Solution

The fourth proportional to 9,915.63, 13,683.92 and 5,439.39 is: 7,506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.63 : 13,683.92 = 5,439.39 : x
  2. Step 2: Convert to fraction form
    9,915.63/13,683.92 = 5,439.39/x
  3. Step 3: Cross multiply
    9,915.63x = 13,683.92 × 5,439.39
  4. Step 4: Simplify right side
    9,915.63x = 74,432,177.61
  5. Step 5: Solve for x
    x = 74,432,177.61/9,915.63
  6. Step 6: Final answer
    x = 7,506.55

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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.