Home / 22,347.45-30,840.21-12,915.99

Finding the Fourth Proportional to 22,347.45, 30,840.21 and 12,915.99

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Solution

The fourth proportional to 22,347.45, 30,840.21 and 12,915.99 is: 17,824.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,347.45 : 30,840.21 = 12,915.99 : x
  2. Step 2: Convert to fraction form
    22,347.45/30,840.21 = 12,915.99/x
  3. Step 3: Cross multiply
    22,347.45x = 30,840.21 × 12,915.99
  4. Step 4: Simplify right side
    22,347.45x = 398,331,843.96
  5. Step 5: Solve for x
    x = 398,331,843.96/22,347.45
  6. Step 6: Final answer
    x = 17,824.49

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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.