Home / 21,031.32-31,566.42-10,650.36

Finding the Fourth Proportional to 21,031.32, 31,566.42 and 10,650.36

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Solution

The fourth proportional to 21,031.32, 31,566.42 and 10,650.36 is: 15,985.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.32 : 31,566.42 = 10,650.36 : x
  2. Step 2: Convert to fraction form
    21,031.32/31,566.42 = 10,650.36/x
  3. Step 3: Cross multiply
    21,031.32x = 31,566.42 × 10,650.36
  4. Step 4: Simplify right side
    21,031.32x = 336,193,736.91
  5. Step 5: Solve for x
    x = 336,193,736.91/21,031.32
  6. Step 6: Final answer
    x = 15,985.38

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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.