Home / 20,548.98-28,328.13-13,822.74

Finding the Fourth Proportional to 20,548.98, 28,328.13 and 13,822.74

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Solution

The fourth proportional to 20,548.98, 28,328.13 and 13,822.74 is: 19,055.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.98 : 28,328.13 = 13,822.74 : x
  2. Step 2: Convert to fraction form
    20,548.98/28,328.13 = 13,822.74/x
  3. Step 3: Cross multiply
    20,548.98x = 28,328.13 × 13,822.74
  4. Step 4: Simplify right side
    20,548.98x = 391,572,375.68
  5. Step 5: Solve for x
    x = 391,572,375.68/20,548.98
  6. Step 6: Final answer
    x = 19,055.56

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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.