Home / 12,720.38-19,083.40-5,223.93

Finding the Fourth Proportional to 12,720.38, 19,083.40 and 5,223.93

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Solution

The fourth proportional to 12,720.38, 19,083.40 and 5,223.93 is: 7,837.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.38 : 19,083.40 = 5,223.93 : x
  2. Step 2: Convert to fraction form
    12,720.38/19,083.40 = 5,223.93/x
  3. Step 3: Cross multiply
    12,720.38x = 19,083.40 × 5,223.93
  4. Step 4: Simplify right side
    12,720.38x = 99,690,261.14
  5. Step 5: Solve for x
    x = 99,690,261.14/12,720.38
  6. Step 6: Final answer
    x = 7,837.05

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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.