Home / 21,374.32-32,221.66-19,947.28

Finding the Fourth Proportional to 21,374.32, 32,221.66 and 19,947.28

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Solution

The fourth proportional to 21,374.32, 32,221.66 and 19,947.28 is: 30,070.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.32 : 32,221.66 = 19,947.28 : x
  2. Step 2: Convert to fraction form
    21,374.32/32,221.66 = 19,947.28/x
  3. Step 3: Cross multiply
    21,374.32x = 32,221.66 × 19,947.28
  4. Step 4: Simplify right side
    21,374.32x = 642,734,474.08
  5. Step 5: Solve for x
    x = 642,734,474.08/21,374.32
  6. Step 6: Final answer
    x = 30,070.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.