Home / 20,953.16-28,915.80-11,522.24

Finding the Fourth Proportional to 20,953.16, 28,915.80 and 11,522.24

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Solution

The fourth proportional to 20,953.16, 28,915.80 and 11,522.24 is: 15,900.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.16 : 28,915.80 = 11,522.24 : x
  2. Step 2: Convert to fraction form
    20,953.16/28,915.80 = 11,522.24/x
  3. Step 3: Cross multiply
    20,953.16x = 28,915.80 × 11,522.24
  4. Step 4: Simplify right side
    20,953.16x = 333,174,787.39
  5. Step 5: Solve for x
    x = 333,174,787.39/20,953.16
  6. Step 6: Final answer
    x = 15,900.93

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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.