Home / 18,617.04-25,685.28-11,439.36

Finding the Fourth Proportional to 18,617.04, 25,685.28 and 11,439.36

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Solution

The fourth proportional to 18,617.04, 25,685.28 and 11,439.36 is: 15,782.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.04 : 25,685.28 = 11,439.36 : x
  2. Step 2: Convert to fraction form
    18,617.04/25,685.28 = 11,439.36/x
  3. Step 3: Cross multiply
    18,617.04x = 25,685.28 × 11,439.36
  4. Step 4: Simplify right side
    18,617.04x = 293,823,164.62
  5. Step 5: Solve for x
    x = 293,823,164.62/18,617.04
  6. Step 6: Final answer
    x = 15,782.49

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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.