Home / 20,655.40-31,003.44-14,738.80

Finding the Fourth Proportional to 20,655.40, 31,003.44 and 14,738.80

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Solution

The fourth proportional to 20,655.40, 31,003.44 and 14,738.80 is: 22,122.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.40 : 31,003.44 = 14,738.80 : x
  2. Step 2: Convert to fraction form
    20,655.40/31,003.44 = 14,738.80/x
  3. Step 3: Cross multiply
    20,655.40x = 31,003.44 × 14,738.80
  4. Step 4: Simplify right side
    20,655.40x = 456,953,501.47
  5. Step 5: Solve for x
    x = 456,953,501.47/20,655.40
  6. Step 6: Final answer
    x = 22,122.71

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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.