Home / 21,224.84-31,837.05-12,907.15

Finding the Fourth Proportional to 21,224.84, 31,837.05 and 12,907.15

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Solution

The fourth proportional to 21,224.84, 31,837.05 and 12,907.15 is: 19,360.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.84 : 31,837.05 = 12,907.15 : x
  2. Step 2: Convert to fraction form
    21,224.84/31,837.05 = 12,907.15/x
  3. Step 3: Cross multiply
    21,224.84x = 31,837.05 × 12,907.15
  4. Step 4: Simplify right side
    21,224.84x = 410,925,500.31
  5. Step 5: Solve for x
    x = 410,925,500.31/21,224.84
  6. Step 6: Final answer
    x = 19,360.60

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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.