Home / 19,886.31-29,948.67-18,114.84

Finding the Fourth Proportional to 19,886.31, 29,948.67 and 18,114.84

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Solution

The fourth proportional to 19,886.31, 29,948.67 and 18,114.84 is: 27,280.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,886.31 : 29,948.67 = 18,114.84 : x
  2. Step 2: Convert to fraction form
    19,886.31/29,948.67 = 18,114.84/x
  3. Step 3: Cross multiply
    19,886.31x = 29,948.67 × 18,114.84
  4. Step 4: Simplify right side
    19,886.31x = 542,515,365.26
  5. Step 5: Solve for x
    x = 542,515,365.26/19,886.31
  6. Step 6: Final answer
    x = 27,280.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.