Home / 21,486.38-32,228.27-12,776.72

Finding the Fourth Proportional to 21,486.38, 32,228.27 and 12,776.72

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Solution

The fourth proportional to 21,486.38, 32,228.27 and 12,776.72 is: 19,164.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.38 : 32,228.27 = 12,776.72 : x
  2. Step 2: Convert to fraction form
    21,486.38/32,228.27 = 12,776.72/x
  3. Step 3: Cross multiply
    21,486.38x = 32,228.27 × 12,776.72
  4. Step 4: Simplify right side
    21,486.38x = 411,771,581.87
  5. Step 5: Solve for x
    x = 411,771,581.87/21,486.38
  6. Step 6: Final answer
    x = 19,164.31

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1.5x scale

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.