Home / 39,072.51-58,616.06-12,778.70

Finding the Fourth Proportional to 39,072.51, 58,616.06 and 12,778.70

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Solution

The fourth proportional to 39,072.51, 58,616.06 and 12,778.70 is: 19,170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,072.51 : 58,616.06 = 12,778.70 : x
  2. Step 2: Convert to fraction form
    39,072.51/58,616.06 = 12,778.70/x
  3. Step 3: Cross multiply
    39,072.51x = 58,616.06 × 12,778.70
  4. Step 4: Simplify right side
    39,072.51x = 749,036,688.95
  5. Step 5: Solve for x
    x = 749,036,688.95/39,072.51
  6. Step 6: Final answer
    x = 19,170.43

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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.