Home / 12,655.71-18,988.47-5,258.25

Finding the Fourth Proportional to 12,655.71, 18,988.47 and 5,258.25

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Solution

The fourth proportional to 12,655.71, 18,988.47 and 5,258.25 is: 7,889.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.71 : 18,988.47 = 5,258.25 : x
  2. Step 2: Convert to fraction form
    12,655.71/18,988.47 = 5,258.25/x
  3. Step 3: Cross multiply
    12,655.71x = 18,988.47 × 5,258.25
  4. Step 4: Simplify right side
    12,655.71x = 99,846,122.38
  5. Step 5: Solve for x
    x = 99,846,122.38/12,655.71
  6. Step 6: Final answer
    x = 7,889.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.