Home / 30,902.31-42,629.49-19,552.68

Finding the Fourth Proportional to 30,902.31, 42,629.49 and 19,552.68

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Solution

The fourth proportional to 30,902.31, 42,629.49 and 19,552.68 is: 26,972.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,902.31 : 42,629.49 = 19,552.68 : x
  2. Step 2: Convert to fraction form
    30,902.31/42,629.49 = 19,552.68/x
  3. Step 3: Cross multiply
    30,902.31x = 42,629.49 × 19,552.68
  4. Step 4: Simplify right side
    30,902.31x = 833,520,776.53
  5. Step 5: Solve for x
    x = 833,520,776.53/30,902.31
  6. Step 6: Final answer
    x = 26,972.77

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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.