Home / 31,614.65-43,648.55-20,289.03

Finding the Fourth Proportional to 31,614.65, 43,648.55 and 20,289.03

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Solution

The fourth proportional to 31,614.65, 43,648.55 and 20,289.03 is: 28,011.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,614.65 : 43,648.55 = 20,289.03 : x
  2. Step 2: Convert to fraction form
    31,614.65/43,648.55 = 20,289.03/x
  3. Step 3: Cross multiply
    31,614.65x = 43,648.55 × 20,289.03
  4. Step 4: Simplify right side
    31,614.65x = 885,586,665.49
  5. Step 5: Solve for x
    x = 885,586,665.49/31,614.65
  6. Step 6: Final answer
    x = 28,011.91

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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.