Home / 28,453.06-42,642.87-13,631.14

Finding the Fourth Proportional to 28,453.06, 42,642.87 and 13,631.14

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Solution

The fourth proportional to 28,453.06, 42,642.87 and 13,631.14 is: 20,429.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.06 : 42,642.87 = 13,631.14 : x
  2. Step 2: Convert to fraction form
    28,453.06/42,642.87 = 13,631.14/x
  3. Step 3: Cross multiply
    28,453.06x = 42,642.87 × 13,631.14
  4. Step 4: Simplify right side
    28,453.06x = 581,270,930.97
  5. Step 5: Solve for x
    x = 581,270,930.97/28,453.06
  6. Step 6: Final answer
    x = 20,429.12

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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.