Home / 9,915.90-13,683.96-5,438.94

Finding the Fourth Proportional to 9,915.90, 13,683.96 and 5,438.94

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Solution

The fourth proportional to 9,915.90, 13,683.96 and 5,438.94 is: 7,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.90 : 13,683.96 = 5,438.94 : x
  2. Step 2: Convert to fraction form
    9,915.90/13,683.96 = 5,438.94/x
  3. Step 3: Cross multiply
    9,915.90x = 13,683.96 × 5,438.94
  4. Step 4: Simplify right side
    9,915.90x = 74,426,237.40
  5. Step 5: Solve for x
    x = 74,426,237.40/9,915.90
  6. Step 6: Final answer
    x = 7,505.75

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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.