Home / 39,138.19-58,704.09-15,444.78

Finding the Fourth Proportional to 39,138.19, 58,704.09 and 15,444.78

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Solution

The fourth proportional to 39,138.19, 58,704.09 and 15,444.78 is: 23,165.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,138.19 : 58,704.09 = 15,444.78 : x
  2. Step 2: Convert to fraction form
    39,138.19/58,704.09 = 15,444.78/x
  3. Step 3: Cross multiply
    39,138.19x = 58,704.09 × 15,444.78
  4. Step 4: Simplify right side
    39,138.19x = 906,671,563.97
  5. Step 5: Solve for x
    x = 906,671,563.97/39,138.19
  6. Step 6: Final answer
    x = 23,165.91

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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.