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Finding the Fourth Proportional to 19,992.31, 29,992.11 and 10,002.28

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Solution

The fourth proportional to 19,992.31, 29,992.11 and 10,002.28 is: 15,005.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.31 : 29,992.11 = 10,002.28 : x
  2. Step 2: Convert to fraction form
    19,992.31/29,992.11 = 10,002.28/x
  3. Step 3: Cross multiply
    19,992.31x = 29,992.11 × 10,002.28
  4. Step 4: Simplify right side
    19,992.31x = 299,989,482.01
  5. Step 5: Solve for x
    x = 299,989,482.01/19,992.31
  6. Step 6: Final answer
    x = 15,005.24

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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.