Home / 20,155.84-27,788.34-16,557.28

Finding the Fourth Proportional to 20,155.84, 27,788.34 and 16,557.28

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Solution

The fourth proportional to 20,155.84, 27,788.34 and 16,557.28 is: 22,827.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.84 : 27,788.34 = 16,557.28 : x
  2. Step 2: Convert to fraction form
    20,155.84/27,788.34 = 16,557.28/x
  3. Step 3: Cross multiply
    20,155.84x = 27,788.34 × 16,557.28
  4. Step 4: Simplify right side
    20,155.84x = 460,099,326.12
  5. Step 5: Solve for x
    x = 460,099,326.12/20,155.84
  6. Step 6: Final answer
    x = 22,827.10

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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.