Home / 30,435.73-42,006.12-18,502.81

Finding the Fourth Proportional to 30,435.73, 42,006.12 and 18,502.81

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Solution

The fourth proportional to 30,435.73, 42,006.12 and 18,502.81 is: 25,536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,435.73 : 42,006.12 = 18,502.81 : x
  2. Step 2: Convert to fraction form
    30,435.73/42,006.12 = 18,502.81/x
  3. Step 3: Cross multiply
    30,435.73x = 42,006.12 × 18,502.81
  4. Step 4: Simplify right side
    30,435.73x = 777,231,257.20
  5. Step 5: Solve for x
    x = 777,231,257.20/30,435.73
  6. Step 6: Final answer
    x = 25,536.80

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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.