Home / 30,602.12-42,217.62-18,663.56

Finding the Fourth Proportional to 30,602.12, 42,217.62 and 18,663.56

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Solution

The fourth proportional to 30,602.12, 42,217.62 and 18,663.56 is: 25,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,602.12 : 42,217.62 = 18,663.56 : x
  2. Step 2: Convert to fraction form
    30,602.12/42,217.62 = 18,663.56/x
  3. Step 3: Cross multiply
    30,602.12x = 42,217.62 × 18,663.56
  4. Step 4: Simplify right side
    30,602.12x = 787,931,083.93
  5. Step 5: Solve for x
    x = 787,931,083.93/30,602.12
  6. Step 6: Final answer
    x = 25,747.60

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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.