Home / 21,787.52-32,724.48-18,666.32

Finding the Fourth Proportional to 21,787.52, 32,724.48 and 18,666.32

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Solution

The fourth proportional to 21,787.52, 32,724.48 and 18,666.32 is: 28,036.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.52 : 32,724.48 = 18,666.32 : x
  2. Step 2: Convert to fraction form
    21,787.52/32,724.48 = 18,666.32/x
  3. Step 3: Cross multiply
    21,787.52x = 32,724.48 × 18,666.32
  4. Step 4: Simplify right side
    21,787.52x = 610,845,615.51
  5. Step 5: Solve for x
    x = 610,845,615.51/21,787.52
  6. Step 6: Final answer
    x = 28,036.49

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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.