Home / 31,475.64-47,208.80-11,480.45

Finding the Fourth Proportional to 31,475.64, 47,208.80 and 11,480.45

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Solution

The fourth proportional to 31,475.64, 47,208.80 and 11,480.45 is: 17,218.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,475.64 : 47,208.80 = 11,480.45 : x
  2. Step 2: Convert to fraction form
    31,475.64/47,208.80 = 11,480.45/x
  3. Step 3: Cross multiply
    31,475.64x = 47,208.80 × 11,480.45
  4. Step 4: Simplify right side
    31,475.64x = 541,978,267.96
  5. Step 5: Solve for x
    x = 541,978,267.96/31,475.64
  6. Step 6: Final answer
    x = 17,218.98

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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.