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Finding the Fourth Proportional to 19,978.04, 27,569.16 and 11,025.38

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Solution

The fourth proportional to 19,978.04, 27,569.16 and 11,025.38 is: 15,214.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,978.04 : 27,569.16 = 11,025.38 : x
  2. Step 2: Convert to fraction form
    19,978.04/27,569.16 = 11,025.38/x
  3. Step 3: Cross multiply
    19,978.04x = 27,569.16 × 11,025.38
  4. Step 4: Simplify right side
    19,978.04x = 303,960,534.20
  5. Step 5: Solve for x
    x = 303,960,534.20/19,978.04
  6. Step 6: Final answer
    x = 15,214.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.