Home / 18,617.55-25,681.80-11,442.47

Finding the Fourth Proportional to 18,617.55, 25,681.80 and 11,442.47

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Solution

The fourth proportional to 18,617.55, 25,681.80 and 11,442.47 is: 15,784.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.55 : 25,681.80 = 11,442.47 : x
  2. Step 2: Convert to fraction form
    18,617.55/25,681.80 = 11,442.47/x
  3. Step 3: Cross multiply
    18,617.55x = 25,681.80 × 11,442.47
  4. Step 4: Simplify right side
    18,617.55x = 293,863,097.64
  5. Step 5: Solve for x
    x = 293,863,097.64/18,617.55
  6. Step 6: Final answer
    x = 15,784.20

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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.