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Finding the Fourth Proportional to 19,858.32, 29,795.19 and 8,757.12

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Solution

The fourth proportional to 19,858.32, 29,795.19 and 8,757.12 is: 13,139.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,858.32 : 29,795.19 = 8,757.12 : x
  2. Step 2: Convert to fraction form
    19,858.32/29,795.19 = 8,757.12/x
  3. Step 3: Cross multiply
    19,858.32x = 29,795.19 × 8,757.12
  4. Step 4: Simplify right side
    19,858.32x = 260,920,054.25
  5. Step 5: Solve for x
    x = 260,920,054.25/19,858.32
  6. Step 6: Final answer
    x = 13,139.08

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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.