Home / 39,058.56-58,574.40-12,756.78

Finding the Fourth Proportional to 39,058.56, 58,574.40 and 12,756.78

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Solution

The fourth proportional to 39,058.56, 58,574.40 and 12,756.78 is: 19,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,058.56 : 58,574.40 = 12,756.78 : x
  2. Step 2: Convert to fraction form
    39,058.56/58,574.40 = 12,756.78/x
  3. Step 3: Cross multiply
    39,058.56x = 58,574.40 × 12,756.78
  4. Step 4: Simplify right side
    39,058.56x = 747,220,734.43
  5. Step 5: Solve for x
    x = 747,220,734.43/39,058.56
  6. Step 6: Final answer
    x = 19,130.78

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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.