Home / 20,120.53-27,775.63-12,058.02

Finding the Fourth Proportional to 20,120.53, 27,775.63 and 12,058.02

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Solution

The fourth proportional to 20,120.53, 27,775.63 and 12,058.02 is: 16,645.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.53 : 27,775.63 = 12,058.02 : x
  2. Step 2: Convert to fraction form
    20,120.53/27,775.63 = 12,058.02/x
  3. Step 3: Cross multiply
    20,120.53x = 27,775.63 × 12,058.02
  4. Step 4: Simplify right side
    20,120.53x = 334,918,963.17
  5. Step 5: Solve for x
    x = 334,918,963.17/20,120.53
  6. Step 6: Final answer
    x = 16,645.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.