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Finding the Fourth Proportional to 28,777.52, 39,713.72 and 16,202.72

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Solution

The fourth proportional to 28,777.52, 39,713.72 and 16,202.72 is: 22,360.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,777.52 : 39,713.72 = 16,202.72 : x
  2. Step 2: Convert to fraction form
    28,777.52/39,713.72 = 16,202.72/x
  3. Step 3: Cross multiply
    28,777.52x = 39,713.72 × 16,202.72
  4. Step 4: Simplify right side
    28,777.52x = 643,470,285.32
  5. Step 5: Solve for x
    x = 643,470,285.32/28,777.52
  6. Step 6: Final answer
    x = 22,360.17

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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.