Home / 21,307.39-31,961.07-5,725.01

Finding the Fourth Proportional to 21,307.39, 31,961.07 and 5,725.01

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Solution

The fourth proportional to 21,307.39, 31,961.07 and 5,725.01 is: 8,587.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.39 : 31,961.07 = 5,725.01 : x
  2. Step 2: Convert to fraction form
    21,307.39/31,961.07 = 5,725.01/x
  3. Step 3: Cross multiply
    21,307.39x = 31,961.07 × 5,725.01
  4. Step 4: Simplify right side
    21,307.39x = 182,977,445.36
  5. Step 5: Solve for x
    x = 182,977,445.36/21,307.39
  6. Step 6: Final answer
    x = 8,587.51

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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.