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Finding the Fourth Proportional to 39,774.77, 59,661.09 and 9,789.28

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Solution

The fourth proportional to 39,774.77, 59,661.09 and 9,789.28 is: 14,683.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,774.77 : 59,661.09 = 9,789.28 : x
  2. Step 2: Convert to fraction form
    39,774.77/59,661.09 = 9,789.28/x
  3. Step 3: Cross multiply
    39,774.77x = 59,661.09 × 9,789.28
  4. Step 4: Simplify right side
    39,774.77x = 584,038,965.96
  5. Step 5: Solve for x
    x = 584,038,965.96/39,774.77
  6. Step 6: Final answer
    x = 14,683.65

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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.