Home / 20,389.41-30,576.77-7,058.78

Finding the Fourth Proportional to 20,389.41, 30,576.77 and 7,058.78

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Solution

The fourth proportional to 20,389.41, 30,576.77 and 7,058.78 is: 10,585.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389.41 : 30,576.77 = 7,058.78 : x
  2. Step 2: Convert to fraction form
    20,389.41/30,576.77 = 7,058.78/x
  3. Step 3: Cross multiply
    20,389.41x = 30,576.77 × 7,058.78
  4. Step 4: Simplify right side
    20,389.41x = 215,834,692.54
  5. Step 5: Solve for x
    x = 215,834,692.54/20,389.41
  6. Step 6: Final answer
    x = 10,585.63

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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.