Home / 10,515.02-15,772.46-7,218.05

Finding the Fourth Proportional to 10,515.02, 15,772.46 and 7,218.05

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Solution

The fourth proportional to 10,515.02, 15,772.46 and 7,218.05 is: 10,827.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.02 : 15,772.46 = 7,218.05 : x
  2. Step 2: Convert to fraction form
    10,515.02/15,772.46 = 7,218.05/x
  3. Step 3: Cross multiply
    10,515.02x = 15,772.46 × 7,218.05
  4. Step 4: Simplify right side
    10,515.02x = 113,846,289.95
  5. Step 5: Solve for x
    x = 113,846,289.95/10,515.02
  6. Step 6: Final answer
    x = 10,827.02

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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.