Home / 40,840.19-61,221.40-13,118.75

Finding the Fourth Proportional to 40,840.19, 61,221.40 and 13,118.75

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Solution

The fourth proportional to 40,840.19, 61,221.40 and 13,118.75 is: 19,665.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,840.19 : 61,221.40 = 13,118.75 : x
  2. Step 2: Convert to fraction form
    40,840.19/61,221.40 = 13,118.75/x
  3. Step 3: Cross multiply
    40,840.19x = 61,221.40 × 13,118.75
  4. Step 4: Simplify right side
    40,840.19x = 803,148,241.25
  5. Step 5: Solve for x
    x = 803,148,241.25/40,840.19
  6. Step 6: Final answer
    x = 19,665.63

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1.5x scale

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.