Home / 39,915.88-55,087.20-22,014.40

Finding the Fourth Proportional to 39,915.88, 55,087.20 and 22,014.40

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Solution

The fourth proportional to 39,915.88, 55,087.20 and 22,014.40 is: 30,381.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,915.88 : 55,087.20 = 22,014.40 : x
  2. Step 2: Convert to fraction form
    39,915.88/55,087.20 = 22,014.40/x
  3. Step 3: Cross multiply
    39,915.88x = 55,087.20 × 22,014.40
  4. Step 4: Simplify right side
    39,915.88x = 1,212,711,655.68
  5. Step 5: Solve for x
    x = 1,212,711,655.68/39,915.88
  6. Step 6: Final answer
    x = 30,381.68

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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.