Home / 15,542.28-21,448.40-8,468.64

Finding the Fourth Proportional to 15,542.28, 21,448.40 and 8,468.64

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Solution

The fourth proportional to 15,542.28, 21,448.40 and 8,468.64 is: 11,686.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.28 : 21,448.40 = 8,468.64 : x
  2. Step 2: Convert to fraction form
    15,542.28/21,448.40 = 8,468.64/x
  3. Step 3: Cross multiply
    15,542.28x = 21,448.40 × 8,468.64
  4. Step 4: Simplify right side
    15,542.28x = 181,638,778.18
  5. Step 5: Solve for x
    x = 181,638,778.18/15,542.28
  6. Step 6: Final answer
    x = 11,686.75

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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.