Home / 31,386.24-47,072.16-18,739.56

Finding the Fourth Proportional to 31,386.24, 47,072.16 and 18,739.56

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Solution

The fourth proportional to 31,386.24, 47,072.16 and 18,739.56 is: 28,105.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.24 : 47,072.16 = 18,739.56 : x
  2. Step 2: Convert to fraction form
    31,386.24/47,072.16 = 18,739.56/x
  3. Step 3: Cross multiply
    31,386.24x = 47,072.16 × 18,739.56
  4. Step 4: Simplify right side
    31,386.24x = 882,111,566.65
  5. Step 5: Solve for x
    x = 882,111,566.65/31,386.24
  6. Step 6: Final answer
    x = 28,105.04

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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.