Home / 21,708.60-32,573.70-12,355.80

Finding the Fourth Proportional to 21,708.60, 32,573.70 and 12,355.80

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Solution

The fourth proportional to 21,708.60, 32,573.70 and 12,355.80 is: 18,539.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.60 : 32,573.70 = 12,355.80 : x
  2. Step 2: Convert to fraction form
    21,708.60/32,573.70 = 12,355.80/x
  3. Step 3: Cross multiply
    21,708.60x = 32,573.70 × 12,355.80
  4. Step 4: Simplify right side
    21,708.60x = 402,474,122.46
  5. Step 5: Solve for x
    x = 402,474,122.46/21,708.60
  6. Step 6: Final answer
    x = 18,539.85

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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.