Home / 30,555.51-42,164.33-18,616.92

Finding the Fourth Proportional to 30,555.51, 42,164.33 and 18,616.92

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Solution

The fourth proportional to 30,555.51, 42,164.33 and 18,616.92 is: 25,689.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,555.51 : 42,164.33 = 18,616.92 : x
  2. Step 2: Convert to fraction form
    30,555.51/42,164.33 = 18,616.92/x
  3. Step 3: Cross multiply
    30,555.51x = 42,164.33 × 18,616.92
  4. Step 4: Simplify right side
    30,555.51x = 784,969,865.38
  5. Step 5: Solve for x
    x = 784,969,865.38/30,555.51
  6. Step 6: Final answer
    x = 25,689.96

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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.