Home / 20,653.82-28,502.40-12,156.26

Finding the Fourth Proportional to 20,653.82, 28,502.40 and 12,156.26

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Solution

The fourth proportional to 20,653.82, 28,502.40 and 12,156.26 is: 16,775.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.82 : 28,502.40 = 12,156.26 : x
  2. Step 2: Convert to fraction form
    20,653.82/28,502.40 = 12,156.26/x
  3. Step 3: Cross multiply
    20,653.82x = 28,502.40 × 12,156.26
  4. Step 4: Simplify right side
    20,653.82x = 346,482,585.02
  5. Step 5: Solve for x
    x = 346,482,585.02/20,653.82
  6. Step 6: Final answer
    x = 16,775.71

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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.