Home / 42,969.76-64,477.68-18,340

Finding the Fourth Proportional to 42,969.76, 64,477.68 and 18,340

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Solution

The fourth proportional to 42,969.76, 64,477.68 and 18,340 is: 27,519.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,969.76 : 64,477.68 = 18,340 : x
  2. Step 2: Convert to fraction form
    42,969.76/64,477.68 = 18,340/x
  3. Step 3: Cross multiply
    42,969.76x = 64,477.68 × 18,340
  4. Step 4: Simplify right side
    42,969.76x = 1,182,520,651.20
  5. Step 5: Solve for x
    x = 1,182,520,651.20/42,969.76
  6. Step 6: Final answer
    x = 27,519.83

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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.