Home / 20,459.41-28,224.45-13,288.82

Finding the Fourth Proportional to 20,459.41, 28,224.45 and 13,288.82

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Solution

The fourth proportional to 20,459.41, 28,224.45 and 13,288.82 is: 18,332.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.41 : 28,224.45 = 13,288.82 : x
  2. Step 2: Convert to fraction form
    20,459.41/28,224.45 = 13,288.82/x
  3. Step 3: Cross multiply
    20,459.41x = 28,224.45 × 13,288.82
  4. Step 4: Simplify right side
    20,459.41x = 375,069,494.53
  5. Step 5: Solve for x
    x = 375,069,494.53/20,459.41
  6. Step 6: Final answer
    x = 18,332.37

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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.