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Finding the Fourth Proportional to 15,670.87, 21,625.80 and 8,597.29

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Solution

The fourth proportional to 15,670.87, 21,625.80 and 8,597.29 is: 11,864.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,670.87 : 21,625.80 = 8,597.29 : x
  2. Step 2: Convert to fraction form
    15,670.87/21,625.80 = 8,597.29/x
  3. Step 3: Cross multiply
    15,670.87x = 21,625.80 × 8,597.29
  4. Step 4: Simplify right side
    15,670.87x = 185,923,274.08
  5. Step 5: Solve for x
    x = 185,923,274.08/15,670.87
  6. Step 6: Final answer
    x = 11,864.26

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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.