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Finding the Fourth Proportional to 28,141.32, 38,829.06 and 16,807.80

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Solution

The fourth proportional to 28,141.32, 38,829.06 and 16,807.80 is: 23,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,141.32 : 38,829.06 = 16,807.80 : x
  2. Step 2: Convert to fraction form
    28,141.32/38,829.06 = 16,807.80/x
  3. Step 3: Cross multiply
    28,141.32x = 38,829.06 × 16,807.80
  4. Step 4: Simplify right side
    28,141.32x = 652,631,074.67
  5. Step 5: Solve for x
    x = 652,631,074.67/28,141.32
  6. Step 6: Final answer
    x = 23,191.20

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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.