Home / 20,417.07-30,745.53-17,815.61

Finding the Fourth Proportional to 20,417.07, 30,745.53 and 17,815.61

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Solution

The fourth proportional to 20,417.07, 30,745.53 and 17,815.61 is: 26,828.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.07 : 30,745.53 = 17,815.61 : x
  2. Step 2: Convert to fraction form
    20,417.07/30,745.53 = 17,815.61/x
  3. Step 3: Cross multiply
    20,417.07x = 30,745.53 × 17,815.61
  4. Step 4: Simplify right side
    20,417.07x = 547,750,151.19
  5. Step 5: Solve for x
    x = 547,750,151.19/20,417.07
  6. Step 6: Final answer
    x = 26,828.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.