Home / 28,543.66-39,427.90-21,911.24

Finding the Fourth Proportional to 28,543.66, 39,427.90 and 21,911.24

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Solution

The fourth proportional to 28,543.66, 39,427.90 and 21,911.24 is: 30,266.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.66 : 39,427.90 = 21,911.24 : x
  2. Step 2: Convert to fraction form
    28,543.66/39,427.90 = 21,911.24/x
  3. Step 3: Cross multiply
    28,543.66x = 39,427.90 × 21,911.24
  4. Step 4: Simplify right side
    28,543.66x = 863,914,223.39
  5. Step 5: Solve for x
    x = 863,914,223.39/28,543.66
  6. Step 6: Final answer
    x = 30,266.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.