Home / 42,190.65-63,298.67-12,609.45

Finding the Fourth Proportional to 42,190.65, 63,298.67 and 12,609.45

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Solution

The fourth proportional to 42,190.65, 63,298.67 and 12,609.45 is: 18,917.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,190.65 : 63,298.67 = 12,609.45 : x
  2. Step 2: Convert to fraction form
    42,190.65/63,298.67 = 12,609.45/x
  3. Step 3: Cross multiply
    42,190.65x = 63,298.67 × 12,609.45
  4. Step 4: Simplify right side
    42,190.65x = 798,161,351.38
  5. Step 5: Solve for x
    x = 798,161,351.38/42,190.65
  6. Step 6: Final answer
    x = 18,917.97

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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.