Home / 31,400.64-47,109.24-18,240.36

Finding the Fourth Proportional to 31,400.64, 47,109.24 and 18,240.36

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Solution

The fourth proportional to 31,400.64, 47,109.24 and 18,240.36 is: 27,365.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.64 : 47,109.24 = 18,240.36 : x
  2. Step 2: Convert to fraction form
    31,400.64/47,109.24 = 18,240.36/x
  3. Step 3: Cross multiply
    31,400.64x = 47,109.24 × 18,240.36
  4. Step 4: Simplify right side
    31,400.64x = 859,289,496.93
  5. Step 5: Solve for x
    x = 859,289,496.93/31,400.64
  6. Step 6: Final answer
    x = 27,365.35

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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.