Home / 21,253.66-31,880.99-10,161.52

Finding the Fourth Proportional to 21,253.66, 31,880.99 and 10,161.52

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Solution

The fourth proportional to 21,253.66, 31,880.99 and 10,161.52 is: 15,242.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.66 : 31,880.99 = 10,161.52 : x
  2. Step 2: Convert to fraction form
    21,253.66/31,880.99 = 10,161.52/x
  3. Step 3: Cross multiply
    21,253.66x = 31,880.99 × 10,161.52
  4. Step 4: Simplify right side
    21,253.66x = 323,959,263.21
  5. Step 5: Solve for x
    x = 323,959,263.21/21,253.66
  6. Step 6: Final answer
    x = 15,242.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.