Home / 21,239.46-31,852.71-5,655.06

Finding the Fourth Proportional to 21,239.46, 31,852.71 and 5,655.06

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Solution

The fourth proportional to 21,239.46, 31,852.71 and 5,655.06 is: 8,480.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.46 : 31,852.71 = 5,655.06 : x
  2. Step 2: Convert to fraction form
    21,239.46/31,852.71 = 5,655.06/x
  3. Step 3: Cross multiply
    21,239.46x = 31,852.71 × 5,655.06
  4. Step 4: Simplify right side
    21,239.46x = 180,128,986.21
  5. Step 5: Solve for x
    x = 180,128,986.21/21,239.46
  6. Step 6: Final answer
    x = 8,480.86

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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.