Home / 20,453.66-28,225.48-11,500.93

Finding the Fourth Proportional to 20,453.66, 28,225.48 and 11,500.93

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Solution

The fourth proportional to 20,453.66, 28,225.48 and 11,500.93 is: 15,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.66 : 28,225.48 = 11,500.93 : x
  2. Step 2: Convert to fraction form
    20,453.66/28,225.48 = 11,500.93/x
  3. Step 3: Cross multiply
    20,453.66x = 28,225.48 × 11,500.93
  4. Step 4: Simplify right side
    20,453.66x = 324,619,199.13
  5. Step 5: Solve for x
    x = 324,619,199.13/20,453.66
  6. Step 6: Final answer
    x = 15,870.96

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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.