Home / 21,152.63-31,729.40-7,113.11

Finding the Fourth Proportional to 21,152.63, 31,729.40 and 7,113.11

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Solution

The fourth proportional to 21,152.63, 31,729.40 and 7,113.11 is: 10,669.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.63 : 31,729.40 = 7,113.11 : x
  2. Step 2: Convert to fraction form
    21,152.63/31,729.40 = 7,113.11/x
  3. Step 3: Cross multiply
    21,152.63x = 31,729.40 × 7,113.11
  4. Step 4: Simplify right side
    21,152.63x = 225,694,571.57
  5. Step 5: Solve for x
    x = 225,694,571.57/21,152.63
  6. Step 6: Final answer
    x = 10,669.81

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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.