Home / 39,431.36-59,153.76-13,142.72

Finding the Fourth Proportional to 39,431.36, 59,153.76 and 13,142.72

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Solution

The fourth proportional to 39,431.36, 59,153.76 and 13,142.72 is: 19,716.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.36 : 59,153.76 = 13,142.72 : x
  2. Step 2: Convert to fraction form
    39,431.36/59,153.76 = 13,142.72/x
  3. Step 3: Cross multiply
    39,431.36x = 59,153.76 × 13,142.72
  4. Step 4: Simplify right side
    39,431.36x = 777,441,304.63
  5. Step 5: Solve for x
    x = 777,441,304.63/39,431.36
  6. Step 6: Final answer
    x = 19,716.32

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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.