Home / 22,990.88-31,726.32-12,918.08

Finding the Fourth Proportional to 22,990.88, 31,726.32 and 12,918.08

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Solution

The fourth proportional to 22,990.88, 31,726.32 and 12,918.08 is: 17,826.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,990.88 : 31,726.32 = 12,918.08 : x
  2. Step 2: Convert to fraction form
    22,990.88/31,726.32 = 12,918.08/x
  3. Step 3: Cross multiply
    22,990.88x = 31,726.32 × 12,918.08
  4. Step 4: Simplify right side
    22,990.88x = 409,843,139.87
  5. Step 5: Solve for x
    x = 409,843,139.87/22,990.88
  6. Step 6: Final answer
    x = 17,826.34

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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.