Home / 31,579.65-47,365.80-8,207.91

Finding the Fourth Proportional to 31,579.65, 47,365.80 and 8,207.91

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Solution

The fourth proportional to 31,579.65, 47,365.80 and 8,207.91 is: 12,310.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.65 : 47,365.80 = 8,207.91 : x
  2. Step 2: Convert to fraction form
    31,579.65/47,365.80 = 8,207.91/x
  3. Step 3: Cross multiply
    31,579.65x = 47,365.80 × 8,207.91
  4. Step 4: Simplify right side
    31,579.65x = 388,774,223.48
  5. Step 5: Solve for x
    x = 388,774,223.48/31,579.65
  6. Step 6: Final answer
    x = 12,310.91

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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.