Home / 13,880.72-19,161.70-8,851.80

Finding the Fourth Proportional to 13,880.72, 19,161.70 and 8,851.80

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Solution

The fourth proportional to 13,880.72, 19,161.70 and 8,851.80 is: 12,219.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.72 : 19,161.70 = 8,851.80 : x
  2. Step 2: Convert to fraction form
    13,880.72/19,161.70 = 8,851.80/x
  3. Step 3: Cross multiply
    13,880.72x = 19,161.70 × 8,851.80
  4. Step 4: Simplify right side
    13,880.72x = 169,615,536.06
  5. Step 5: Solve for x
    x = 169,615,536.06/13,880.72
  6. Step 6: Final answer
    x = 12,219.51

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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.