Home / 30,666.82-42,309.66-19,925.14

Finding the Fourth Proportional to 30,666.82, 42,309.66 and 19,925.14

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Solution

The fourth proportional to 30,666.82, 42,309.66 and 19,925.14 is: 27,489.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,666.82 : 42,309.66 = 19,925.14 : x
  2. Step 2: Convert to fraction form
    30,666.82/42,309.66 = 19,925.14/x
  3. Step 3: Cross multiply
    30,666.82x = 42,309.66 × 19,925.14
  4. Step 4: Simplify right side
    30,666.82x = 843,025,898.85
  5. Step 5: Solve for x
    x = 843,025,898.85/30,666.82
  6. Step 6: Final answer
    x = 27,489.84

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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.