Home / 20,710.82-28,580.01-11,758.16

Finding the Fourth Proportional to 20,710.82, 28,580.01 and 11,758.16

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Solution

The fourth proportional to 20,710.82, 28,580.01 and 11,758.16 is: 16,225.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.82 : 28,580.01 = 11,758.16 : x
  2. Step 2: Convert to fraction form
    20,710.82/28,580.01 = 11,758.16/x
  3. Step 3: Cross multiply
    20,710.82x = 28,580.01 × 11,758.16
  4. Step 4: Simplify right side
    20,710.82x = 336,048,330.38
  5. Step 5: Solve for x
    x = 336,048,330.38/20,710.82
  6. Step 6: Final answer
    x = 16,225.74

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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.