Home / 18,900.45-26,101.62-15,576.21

Finding the Fourth Proportional to 18,900.45, 26,101.62 and 15,576.21

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Solution

The fourth proportional to 18,900.45, 26,101.62 and 15,576.21 is: 21,510.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.45 : 26,101.62 = 15,576.21 : x
  2. Step 2: Convert to fraction form
    18,900.45/26,101.62 = 15,576.21/x
  3. Step 3: Cross multiply
    18,900.45x = 26,101.62 × 15,576.21
  4. Step 4: Simplify right side
    18,900.45x = 406,564,314.46
  5. Step 5: Solve for x
    x = 406,564,314.46/18,900.45
  6. Step 6: Final answer
    x = 21,510.83

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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.