Home / 39,427.28-59,142-13,131.08

Finding the Fourth Proportional to 39,427.28, 59,142 and 13,131.08

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Solution

The fourth proportional to 39,427.28, 59,142 and 13,131.08 is: 19,696.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,427.28 : 59,142 = 13,131.08 : x
  2. Step 2: Convert to fraction form
    39,427.28/59,142 = 13,131.08/x
  3. Step 3: Cross multiply
    39,427.28x = 59,142 × 13,131.08
  4. Step 4: Simplify right side
    39,427.28x = 776,598,333.36
  5. Step 5: Solve for x
    x = 776,598,333.36/39,427.28
  6. Step 6: Final answer
    x = 19,696.98

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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.