Home / 21,422.60-32,124.30-9,729.80

Finding the Fourth Proportional to 21,422.60, 32,124.30 and 9,729.80

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Solution

The fourth proportional to 21,422.60, 32,124.30 and 9,729.80 is: 14,590.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.60 : 32,124.30 = 9,729.80 : x
  2. Step 2: Convert to fraction form
    21,422.60/32,124.30 = 9,729.80/x
  3. Step 3: Cross multiply
    21,422.60x = 32,124.30 × 9,729.80
  4. Step 4: Simplify right side
    21,422.60x = 312,563,014.14
  5. Step 5: Solve for x
    x = 312,563,014.14/21,422.60
  6. Step 6: Final answer
    x = 14,590.34

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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.