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Finding the Fourth Proportional to 14,776.77, 20,391.55 and 8,062.40

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Solution

The fourth proportional to 14,776.77, 20,391.55 and 8,062.40 is: 11,125.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,776.77 : 20,391.55 = 8,062.40 : x
  2. Step 2: Convert to fraction form
    14,776.77/20,391.55 = 8,062.40/x
  3. Step 3: Cross multiply
    14,776.77x = 20,391.55 × 8,062.40
  4. Step 4: Simplify right side
    14,776.77x = 164,404,794.19
  5. Step 5: Solve for x
    x = 164,404,794.19/14,776.77
  6. Step 6: Final answer
    x = 11,125.89

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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.