Home / 30,700.14-45,972.45-18,977.82

Finding the Fourth Proportional to 30,700.14, 45,972.45 and 18,977.82

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Solution

The fourth proportional to 30,700.14, 45,972.45 and 18,977.82 is: 28,418.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,700.14 : 45,972.45 = 18,977.82 : x
  2. Step 2: Convert to fraction form
    30,700.14/45,972.45 = 18,977.82/x
  3. Step 3: Cross multiply
    30,700.14x = 45,972.45 × 18,977.82
  4. Step 4: Simplify right side
    30,700.14x = 872,456,881.06
  5. Step 5: Solve for x
    x = 872,456,881.06/30,700.14
  6. Step 6: Final answer
    x = 28,418.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.