Home / 21,587.31-29,794.68-12,155.94

Finding the Fourth Proportional to 21,587.31, 29,794.68 and 12,155.94

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Solution

The fourth proportional to 21,587.31, 29,794.68 and 12,155.94 is: 16,777.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587.31 : 29,794.68 = 12,155.94 : x
  2. Step 2: Convert to fraction form
    21,587.31/29,794.68 = 12,155.94/x
  3. Step 3: Cross multiply
    21,587.31x = 29,794.68 × 12,155.94
  4. Step 4: Simplify right side
    21,587.31x = 362,182,342.40
  5. Step 5: Solve for x
    x = 362,182,342.40/21,587.31
  6. Step 6: Final answer
    x = 16,777.56

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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.