Home / 31,509.09-47,271.83-11,789.18

Finding the Fourth Proportional to 31,509.09, 47,271.83 and 11,789.18

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Solution

The fourth proportional to 31,509.09, 47,271.83 and 11,789.18 is: 17,686.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,509.09 : 47,271.83 = 11,789.18 : x
  2. Step 2: Convert to fraction form
    31,509.09/47,271.83 = 11,789.18/x
  3. Step 3: Cross multiply
    31,509.09x = 47,271.83 × 11,789.18
  4. Step 4: Simplify right side
    31,509.09x = 557,296,112.80
  5. Step 5: Solve for x
    x = 557,296,112.80/31,509.09
  6. Step 6: Final answer
    x = 17,686.84

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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.