Home / 21,117.36-31,685.24-10,031.88

Finding the Fourth Proportional to 21,117.36, 31,685.24 and 10,031.88

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Solution

The fourth proportional to 21,117.36, 31,685.24 and 10,031.88 is: 15,052.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.36 : 31,685.24 = 10,031.88 : x
  2. Step 2: Convert to fraction form
    21,117.36/31,685.24 = 10,031.88/x
  3. Step 3: Cross multiply
    21,117.36x = 31,685.24 × 10,031.88
  4. Step 4: Simplify right side
    21,117.36x = 317,862,525.45
  5. Step 5: Solve for x
    x = 317,862,525.45/21,117.36
  6. Step 6: Final answer
    x = 15,052.19

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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.