Home / 21,001.12-31,483.80-9,307.96

Finding the Fourth Proportional to 21,001.12, 31,483.80 and 9,307.96

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Solution

The fourth proportional to 21,001.12, 31,483.80 and 9,307.96 is: 13,954.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.12 : 31,483.80 = 9,307.96 : x
  2. Step 2: Convert to fraction form
    21,001.12/31,483.80 = 9,307.96/x
  3. Step 3: Cross multiply
    21,001.12x = 31,483.80 × 9,307.96
  4. Step 4: Simplify right side
    21,001.12x = 293,049,951.05
  5. Step 5: Solve for x
    x = 293,049,951.05/21,001.12
  6. Step 6: Final answer
    x = 13,954.02

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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.