Home / 20,953.56-28,915.98-11,522.70

Finding the Fourth Proportional to 20,953.56, 28,915.98 and 11,522.70

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Solution

The fourth proportional to 20,953.56, 28,915.98 and 11,522.70 is: 15,901.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.56 : 28,915.98 = 11,522.70 : x
  2. Step 2: Convert to fraction form
    20,953.56/28,915.98 = 11,522.70/x
  3. Step 3: Cross multiply
    20,953.56x = 28,915.98 × 11,522.70
  4. Step 4: Simplify right side
    20,953.56x = 333,190,162.75
  5. Step 5: Solve for x
    x = 333,190,162.75/20,953.56
  6. Step 6: Final answer
    x = 15,901.36

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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.