Home / 18,710.49-25,795.67-15,511.71

Finding the Fourth Proportional to 18,710.49, 25,795.67 and 15,511.71

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Solution

The fourth proportional to 18,710.49, 25,795.67 and 15,511.71 is: 21,385.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.49 : 25,795.67 = 15,511.71 : x
  2. Step 2: Convert to fraction form
    18,710.49/25,795.67 = 15,511.71/x
  3. Step 3: Cross multiply
    18,710.49x = 25,795.67 × 15,511.71
  4. Step 4: Simplify right side
    18,710.49x = 400,134,874.74
  5. Step 5: Solve for x
    x = 400,134,874.74/18,710.49
  6. Step 6: Final answer
    x = 21,385.59

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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.