Home / 21,076.36-31,603.96-7,031.48

Finding the Fourth Proportional to 21,076.36, 31,603.96 and 7,031.48

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Solution

The fourth proportional to 21,076.36, 31,603.96 and 7,031.48 is: 10,543.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.36 : 31,603.96 = 7,031.48 : x
  2. Step 2: Convert to fraction form
    21,076.36/31,603.96 = 7,031.48/x
  3. Step 3: Cross multiply
    21,076.36x = 31,603.96 × 7,031.48
  4. Step 4: Simplify right side
    21,076.36x = 222,222,612.66
  5. Step 5: Solve for x
    x = 222,222,612.66/21,076.36
  6. Step 6: Final answer
    x = 10,543.69

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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.