Home / 30,675.73-42,329.59-17,931.90

Finding the Fourth Proportional to 30,675.73, 42,329.59 and 17,931.90

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Solution

The fourth proportional to 30,675.73, 42,329.59 and 17,931.90 is: 24,744.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,675.73 : 42,329.59 = 17,931.90 : x
  2. Step 2: Convert to fraction form
    30,675.73/42,329.59 = 17,931.90/x
  3. Step 3: Cross multiply
    30,675.73x = 42,329.59 × 17,931.90
  4. Step 4: Simplify right side
    30,675.73x = 759,049,974.92
  5. Step 5: Solve for x
    x = 759,049,974.92/30,675.73
  6. Step 6: Final answer
    x = 24,744.32

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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.