Home / 18,871.41-26,043.90-11,317.60

Finding the Fourth Proportional to 18,871.41, 26,043.90 and 11,317.60

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Solution

The fourth proportional to 18,871.41, 26,043.90 and 11,317.60 is: 15,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.41 : 26,043.90 = 11,317.60 : x
  2. Step 2: Convert to fraction form
    18,871.41/26,043.90 = 11,317.60/x
  3. Step 3: Cross multiply
    18,871.41x = 26,043.90 × 11,317.60
  4. Step 4: Simplify right side
    18,871.41x = 294,754,442.64
  5. Step 5: Solve for x
    x = 294,754,442.64/18,871.41
  6. Step 6: Final answer
    x = 15,619.10

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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.