Home / 19,921.49-27,432.32-19,479.45

Finding the Fourth Proportional to 19,921.49, 27,432.32 and 19,479.45

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Solution

The fourth proportional to 19,921.49, 27,432.32 and 19,479.45 is: 26,823.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.49 : 27,432.32 = 19,479.45 : x
  2. Step 2: Convert to fraction form
    19,921.49/27,432.32 = 19,479.45/x
  3. Step 3: Cross multiply
    19,921.49x = 27,432.32 × 19,479.45
  4. Step 4: Simplify right side
    19,921.49x = 534,366,620.87
  5. Step 5: Solve for x
    x = 534,366,620.87/19,921.49
  6. Step 6: Final answer
    x = 26,823.62

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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.