Home / 21,152.58-31,731.75-7,302.66

Finding the Fourth Proportional to 21,152.58, 31,731.75 and 7,302.66

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Solution

The fourth proportional to 21,152.58, 31,731.75 and 7,302.66 is: 10,954.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.58 : 31,731.75 = 7,302.66 : x
  2. Step 2: Convert to fraction form
    21,152.58/31,731.75 = 7,302.66/x
  3. Step 3: Cross multiply
    21,152.58x = 31,731.75 × 7,302.66
  4. Step 4: Simplify right side
    21,152.58x = 231,726,181.46
  5. Step 5: Solve for x
    x = 231,726,181.46/21,152.58
  6. Step 6: Final answer
    x = 10,954.98

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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.