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Finding the Fourth Proportional to 15,058.72, 20,782.50 and 8,770.69

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Solution

The fourth proportional to 15,058.72, 20,782.50 and 8,770.69 is: 12,104.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,058.72 : 20,782.50 = 8,770.69 : x
  2. Step 2: Convert to fraction form
    15,058.72/20,782.50 = 8,770.69/x
  3. Step 3: Cross multiply
    15,058.72x = 20,782.50 × 8,770.69
  4. Step 4: Simplify right side
    15,058.72x = 182,276,812.97
  5. Step 5: Solve for x
    x = 182,276,812.97/15,058.72
  6. Step 6: Final answer
    x = 12,104.40

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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.