Home / 13,955.22-19,255.49-8,915.57

Finding the Fourth Proportional to 13,955.22, 19,255.49 and 8,915.57

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Solution

The fourth proportional to 13,955.22, 19,255.49 and 8,915.57 is: 12,301.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.22 : 19,255.49 = 8,915.57 : x
  2. Step 2: Convert to fraction form
    13,955.22/19,255.49 = 8,915.57/x
  3. Step 3: Cross multiply
    13,955.22x = 19,255.49 × 8,915.57
  4. Step 4: Simplify right side
    13,955.22x = 171,673,633.77
  5. Step 5: Solve for x
    x = 171,673,633.77/13,955.22
  6. Step 6: Final answer
    x = 12,301.75

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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.