Home / 20,537.16-28,341.18-11,105.70

Finding the Fourth Proportional to 20,537.16, 28,341.18 and 11,105.70

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Solution

The fourth proportional to 20,537.16, 28,341.18 and 11,105.70 is: 15,325.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,537.16 : 28,341.18 = 11,105.70 : x
  2. Step 2: Convert to fraction form
    20,537.16/28,341.18 = 11,105.70/x
  3. Step 3: Cross multiply
    20,537.16x = 28,341.18 × 11,105.70
  4. Step 4: Simplify right side
    20,537.16x = 314,748,642.73
  5. Step 5: Solve for x
    x = 314,748,642.73/20,537.16
  6. Step 6: Final answer
    x = 15,325.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.