Home / 30,717.90-42,390.34-17,798.94

Finding the Fourth Proportional to 30,717.90, 42,390.34 and 17,798.94

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Solution

The fourth proportional to 30,717.90, 42,390.34 and 17,798.94 is: 24,562.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,717.90 : 42,390.34 = 17,798.94 : x
  2. Step 2: Convert to fraction form
    30,717.90/42,390.34 = 17,798.94/x
  3. Step 3: Cross multiply
    30,717.90x = 42,390.34 × 17,798.94
  4. Step 4: Simplify right side
    30,717.90x = 754,503,073.74
  5. Step 5: Solve for x
    x = 754,503,073.74/30,717.90
  6. Step 6: Final answer
    x = 24,562.33

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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.