Home / 21,892.12-32,785.54-12,503.68

Finding the Fourth Proportional to 21,892.12, 32,785.54 and 12,503.68

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Solution

The fourth proportional to 21,892.12, 32,785.54 and 12,503.68 is: 18,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,892.12 : 32,785.54 = 12,503.68 : x
  2. Step 2: Convert to fraction form
    21,892.12/32,785.54 = 12,503.68/x
  3. Step 3: Cross multiply
    21,892.12x = 32,785.54 × 12,503.68
  4. Step 4: Simplify right side
    21,892.12x = 409,939,787.56
  5. Step 5: Solve for x
    x = 409,939,787.56/21,892.12
  6. Step 6: Final answer
    x = 18,725.45

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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.