Home / 39,240.21-58,851.99-12,938.70

Finding the Fourth Proportional to 39,240.21, 58,851.99 and 12,938.70

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Solution

The fourth proportional to 39,240.21, 58,851.99 and 12,938.70 is: 19,405.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,240.21 : 58,851.99 = 12,938.70 : x
  2. Step 2: Convert to fraction form
    39,240.21/58,851.99 = 12,938.70/x
  3. Step 3: Cross multiply
    39,240.21x = 58,851.99 × 12,938.70
  4. Step 4: Simplify right side
    39,240.21x = 761,468,243.01
  5. Step 5: Solve for x
    x = 761,468,243.01/39,240.21
  6. Step 6: Final answer
    x = 19,405.30

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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.