Home / 10,915.89-15,069.66-7,349.60

Finding the Fourth Proportional to 10,915.89, 15,069.66 and 7,349.60

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Solution

The fourth proportional to 10,915.89, 15,069.66 and 7,349.60 is: 10,146.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.89 : 15,069.66 = 7,349.60 : x
  2. Step 2: Convert to fraction form
    10,915.89/15,069.66 = 7,349.60/x
  3. Step 3: Cross multiply
    10,915.89x = 15,069.66 × 7,349.60
  4. Step 4: Simplify right side
    10,915.89x = 110,755,870.23
  5. Step 5: Solve for x
    x = 110,755,870.23/10,915.89
  6. Step 6: Final answer
    x = 10,146.30

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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.