Home / 18,718.14-28,077.31-7,624.94

Finding the Fourth Proportional to 18,718.14, 28,077.31 and 7,624.94

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Solution

The fourth proportional to 18,718.14, 28,077.31 and 7,624.94 is: 11,437.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.14 : 28,077.31 = 7,624.94 : x
  2. Step 2: Convert to fraction form
    18,718.14/28,077.31 = 7,624.94/x
  3. Step 3: Cross multiply
    18,718.14x = 28,077.31 × 7,624.94
  4. Step 4: Simplify right side
    18,718.14x = 214,087,749.95
  5. Step 5: Solve for x
    x = 214,087,749.95/18,718.14
  6. Step 6: Final answer
    x = 11,437.45

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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.