Home / 10,112.80-15,165.84-4,915.36

Finding the Fourth Proportional to 10,112.80, 15,165.84 and 4,915.36

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Solution

The fourth proportional to 10,112.80, 15,165.84 and 4,915.36 is: 7,371.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112.80 : 15,165.84 = 4,915.36 : x
  2. Step 2: Convert to fraction form
    10,112.80/15,165.84 = 4,915.36/x
  3. Step 3: Cross multiply
    10,112.80x = 15,165.84 × 4,915.36
  4. Step 4: Simplify right side
    10,112.80x = 74,545,563.30
  5. Step 5: Solve for x
    x = 74,545,563.30/10,112.80
  6. Step 6: Final answer
    x = 7,371.41

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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.