Home / 31,807.94-47,728.31-13,101.80

Finding the Fourth Proportional to 31,807.94, 47,728.31 and 13,101.80

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Solution

The fourth proportional to 31,807.94, 47,728.31 and 13,101.80 is: 19,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,807.94 : 47,728.31 = 13,101.80 : x
  2. Step 2: Convert to fraction form
    31,807.94/47,728.31 = 13,101.80/x
  3. Step 3: Cross multiply
    31,807.94x = 47,728.31 × 13,101.80
  4. Step 4: Simplify right side
    31,807.94x = 625,326,467.81
  5. Step 5: Solve for x
    x = 625,326,467.81/31,807.94
  6. Step 6: Final answer
    x = 19,659.45

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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.