Home / 30,849.74-42,572.31-17,420.19

Finding the Fourth Proportional to 30,849.74, 42,572.31 and 17,420.19

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Solution

The fourth proportional to 30,849.74, 42,572.31 and 17,420.19 is: 24,039.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,849.74 : 42,572.31 = 17,420.19 : x
  2. Step 2: Convert to fraction form
    30,849.74/42,572.31 = 17,420.19/x
  3. Step 3: Cross multiply
    30,849.74x = 42,572.31 × 17,420.19
  4. Step 4: Simplify right side
    30,849.74x = 741,617,728.94
  5. Step 5: Solve for x
    x = 741,617,728.94/30,849.74
  6. Step 6: Final answer
    x = 24,039.68

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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.