Home / 31,354.01-47,032.46-7,980.65

Finding the Fourth Proportional to 31,354.01, 47,032.46 and 7,980.65

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Solution

The fourth proportional to 31,354.01, 47,032.46 and 7,980.65 is: 11,971.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,354.01 : 47,032.46 = 7,980.65 : x
  2. Step 2: Convert to fraction form
    31,354.01/47,032.46 = 7,980.65/x
  3. Step 3: Cross multiply
    31,354.01x = 47,032.46 × 7,980.65
  4. Step 4: Simplify right side
    31,354.01x = 375,349,601.90
  5. Step 5: Solve for x
    x = 375,349,601.90/31,354.01
  6. Step 6: Final answer
    x = 11,971.34

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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.