Home / 20,123.37-27,752.07-12,570.39

Finding the Fourth Proportional to 20,123.37, 27,752.07 and 12,570.39

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Solution

The fourth proportional to 20,123.37, 27,752.07 and 12,570.39 is: 17,335.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.37 : 27,752.07 = 12,570.39 : x
  2. Step 2: Convert to fraction form
    20,123.37/27,752.07 = 12,570.39/x
  3. Step 3: Cross multiply
    20,123.37x = 27,752.07 × 12,570.39
  4. Step 4: Simplify right side
    20,123.37x = 348,854,343.21
  5. Step 5: Solve for x
    x = 348,854,343.21/20,123.37
  6. Step 6: Final answer
    x = 17,335.78

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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.