Home / 21,440.12-32,155.14-12,084.28

Finding the Fourth Proportional to 21,440.12, 32,155.14 and 12,084.28

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Solution

The fourth proportional to 21,440.12, 32,155.14 and 12,084.28 is: 18,123.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.12 : 32,155.14 = 12,084.28 : x
  2. Step 2: Convert to fraction form
    21,440.12/32,155.14 = 12,084.28/x
  3. Step 3: Cross multiply
    21,440.12x = 32,155.14 × 12,084.28
  4. Step 4: Simplify right side
    21,440.12x = 388,571,715.20
  5. Step 5: Solve for x
    x = 388,571,715.20/21,440.12
  6. Step 6: Final answer
    x = 18,123.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.