Home / 12,320.17-18,478.63-3,555.97

Finding the Fourth Proportional to 12,320.17, 18,478.63 and 3,555.97

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Solution

The fourth proportional to 12,320.17, 18,478.63 and 3,555.97 is: 5,333.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.17 : 18,478.63 = 3,555.97 : x
  2. Step 2: Convert to fraction form
    12,320.17/18,478.63 = 3,555.97/x
  3. Step 3: Cross multiply
    12,320.17x = 18,478.63 × 3,555.97
  4. Step 4: Simplify right side
    12,320.17x = 65,709,412.17
  5. Step 5: Solve for x
    x = 65,709,412.17/12,320.17
  6. Step 6: Final answer
    x = 5,333.48

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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.