Home / 29,268.48-40,390.54-15,839.76

Finding the Fourth Proportional to 29,268.48, 40,390.54 and 15,839.76

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Solution

The fourth proportional to 29,268.48, 40,390.54 and 15,839.76 is: 21,858.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,268.48 : 40,390.54 = 15,839.76 : x
  2. Step 2: Convert to fraction form
    29,268.48/40,390.54 = 15,839.76/x
  3. Step 3: Cross multiply
    29,268.48x = 40,390.54 × 15,839.76
  4. Step 4: Simplify right side
    29,268.48x = 639,776,459.87
  5. Step 5: Solve for x
    x = 639,776,459.87/29,268.48
  6. Step 6: Final answer
    x = 21,858.89

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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.