Home / 21,172.01-31,759.34-7,130.88

Finding the Fourth Proportional to 21,172.01, 31,759.34 and 7,130.88

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Solution

The fourth proportional to 21,172.01, 31,759.34 and 7,130.88 is: 10,696.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.01 : 31,759.34 = 7,130.88 : x
  2. Step 2: Convert to fraction form
    21,172.01/31,759.34 = 7,130.88/x
  3. Step 3: Cross multiply
    21,172.01x = 31,759.34 × 7,130.88
  4. Step 4: Simplify right side
    21,172.01x = 226,472,006.76
  5. Step 5: Solve for x
    x = 226,472,006.76/21,172.01
  6. Step 6: Final answer
    x = 10,696.77

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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.