Home / 22,420.19-30,937.16-12,859.58

Finding the Fourth Proportional to 22,420.19, 30,937.16 and 12,859.58

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Solution

The fourth proportional to 22,420.19, 30,937.16 and 12,859.58 is: 17,744.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,420.19 : 30,937.16 = 12,859.58 : x
  2. Step 2: Convert to fraction form
    22,420.19/30,937.16 = 12,859.58/x
  3. Step 3: Cross multiply
    22,420.19x = 30,937.16 × 12,859.58
  4. Step 4: Simplify right side
    22,420.19x = 397,838,747.13
  5. Step 5: Solve for x
    x = 397,838,747.13/22,420.19
  6. Step 6: Final answer
    x = 17,744.66

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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.