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Finding the Fourth Proportional to 19,362.52, 26,720.04 and 10,978.48

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Solution

The fourth proportional to 19,362.52, 26,720.04 and 10,978.48 is: 15,150.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,362.52 : 26,720.04 = 10,978.48 : x
  2. Step 2: Convert to fraction form
    19,362.52/26,720.04 = 10,978.48/x
  3. Step 3: Cross multiply
    19,362.52x = 26,720.04 × 10,978.48
  4. Step 4: Simplify right side
    19,362.52x = 293,345,424.74
  5. Step 5: Solve for x
    x = 293,345,424.74/19,362.52
  6. Step 6: Final answer
    x = 15,150.17

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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.