Home / 22,745.70-31,389.12-13,790.88

Finding the Fourth Proportional to 22,745.70, 31,389.12 and 13,790.88

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Solution

The fourth proportional to 22,745.70, 31,389.12 and 13,790.88 is: 19,031.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,745.70 : 31,389.12 = 13,790.88 : x
  2. Step 2: Convert to fraction form
    22,745.70/31,389.12 = 13,790.88/x
  3. Step 3: Cross multiply
    22,745.70x = 31,389.12 × 13,790.88
  4. Step 4: Simplify right side
    22,745.70x = 432,883,587.23
  5. Step 5: Solve for x
    x = 432,883,587.23/22,745.70
  6. Step 6: Final answer
    x = 19,031.45

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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.