Home / 11,315.89-15,616.09-6,280.43

Finding the Fourth Proportional to 11,315.89, 15,616.09 and 6,280.43

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Solution

The fourth proportional to 11,315.89, 15,616.09 and 6,280.43 is: 8,667.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.89 : 15,616.09 = 6,280.43 : x
  2. Step 2: Convert to fraction form
    11,315.89/15,616.09 = 6,280.43/x
  3. Step 3: Cross multiply
    11,315.89x = 15,616.09 × 6,280.43
  4. Step 4: Simplify right side
    11,315.89x = 98,075,760.12
  5. Step 5: Solve for x
    x = 98,075,760.12/11,315.89
  6. Step 6: Final answer
    x = 8,667.09

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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.