Home / 15,471.21-21,350.27-8,756.72

Finding the Fourth Proportional to 15,471.21, 21,350.27 and 8,756.72

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Solution

The fourth proportional to 15,471.21, 21,350.27 and 8,756.72 is: 12,084.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.21 : 21,350.27 = 8,756.72 : x
  2. Step 2: Convert to fraction form
    15,471.21/21,350.27 = 8,756.72/x
  3. Step 3: Cross multiply
    15,471.21x = 21,350.27 × 8,756.72
  4. Step 4: Simplify right side
    15,471.21x = 186,958,185.78
  5. Step 5: Solve for x
    x = 186,958,185.78/15,471.21
  6. Step 6: Final answer
    x = 12,084.26

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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.