Home / 15,131.12-20,880.27-8,416.22

Finding the Fourth Proportional to 15,131.12, 20,880.27 and 8,416.22

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Solution

The fourth proportional to 15,131.12, 20,880.27 and 8,416.22 is: 11,614.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.12 : 20,880.27 = 8,416.22 : x
  2. Step 2: Convert to fraction form
    15,131.12/20,880.27 = 8,416.22/x
  3. Step 3: Cross multiply
    15,131.12x = 20,880.27 × 8,416.22
  4. Step 4: Simplify right side
    15,131.12x = 175,732,841.58
  5. Step 5: Solve for x
    x = 175,732,841.58/15,131.12
  6. Step 6: Final answer
    x = 11,614.00

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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.