Home / 12,721.02-19,084.58-5,321.38

Finding the Fourth Proportional to 12,721.02, 19,084.58 and 5,321.38

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Solution

The fourth proportional to 12,721.02, 19,084.58 and 5,321.38 is: 7,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.02 : 19,084.58 = 5,321.38 : x
  2. Step 2: Convert to fraction form
    12,721.02/19,084.58 = 5,321.38/x
  3. Step 3: Cross multiply
    12,721.02x = 19,084.58 × 5,321.38
  4. Step 4: Simplify right side
    12,721.02x = 101,556,302.32
  5. Step 5: Solve for x
    x = 101,556,302.32/12,721.02
  6. Step 6: Final answer
    x = 7,983.35

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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.