Home / 31,486.32-47,177.64-21,999.60

Finding the Fourth Proportional to 31,486.32, 47,177.64 and 21,999.60

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Solution

The fourth proportional to 31,486.32, 47,177.64 and 21,999.60 is: 32,963.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,486.32 : 47,177.64 = 21,999.60 : x
  2. Step 2: Convert to fraction form
    31,486.32/47,177.64 = 21,999.60/x
  3. Step 3: Cross multiply
    31,486.32x = 47,177.64 × 21,999.60
  4. Step 4: Simplify right side
    31,486.32x = 1,037,889,208.94
  5. Step 5: Solve for x
    x = 1,037,889,208.94/31,486.32
  6. Step 6: Final answer
    x = 32,963.18

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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.