Home / 43,278.69-64,920.77-18,315.45

Finding the Fourth Proportional to 43,278.69, 64,920.77 and 18,315.45

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Solution

The fourth proportional to 43,278.69, 64,920.77 and 18,315.45 is: 27,474.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,278.69 : 64,920.77 = 18,315.45 : x
  2. Step 2: Convert to fraction form
    43,278.69/64,920.77 = 18,315.45/x
  3. Step 3: Cross multiply
    43,278.69x = 64,920.77 × 18,315.45
  4. Step 4: Simplify right side
    43,278.69x = 1,189,053,116.90
  5. Step 5: Solve for x
    x = 1,189,053,116.90/43,278.69
  6. Step 6: Final answer
    x = 27,474.33

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1.5x scale

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.