Home / 15,399.74-21,252.36-8,685.23

Finding the Fourth Proportional to 15,399.74, 21,252.36 and 8,685.23

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Solution

The fourth proportional to 15,399.74, 21,252.36 and 8,685.23 is: 11,986.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,399.74 : 21,252.36 = 8,685.23 : x
  2. Step 2: Convert to fraction form
    15,399.74/21,252.36 = 8,685.23/x
  3. Step 3: Cross multiply
    15,399.74x = 21,252.36 × 8,685.23
  4. Step 4: Simplify right side
    15,399.74x = 184,581,576.66
  5. Step 5: Solve for x
    x = 184,581,576.66/15,399.74
  6. Step 6: Final answer
    x = 11,986.02

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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.