Home / 21,084.32-31,645.84-10,703.52

Finding the Fourth Proportional to 21,084.32, 31,645.84 and 10,703.52

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Solution

The fourth proportional to 21,084.32, 31,645.84 and 10,703.52 is: 16,065.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.32 : 31,645.84 = 10,703.52 : x
  2. Step 2: Convert to fraction form
    21,084.32/31,645.84 = 10,703.52/x
  3. Step 3: Cross multiply
    21,084.32x = 31,645.84 × 10,703.52
  4. Step 4: Simplify right side
    21,084.32x = 338,721,881.36
  5. Step 5: Solve for x
    x = 338,721,881.36/21,084.32
  6. Step 6: Final answer
    x = 16,065.11

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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.