Home / 21,828.40-32,742.60-14,311.60

Finding the Fourth Proportional to 21,828.40, 32,742.60 and 14,311.60

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Solution

The fourth proportional to 21,828.40, 32,742.60 and 14,311.60 is: 21,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.40 : 32,742.60 = 14,311.60 : x
  2. Step 2: Convert to fraction form
    21,828.40/32,742.60 = 14,311.60/x
  3. Step 3: Cross multiply
    21,828.40x = 32,742.60 × 14,311.60
  4. Step 4: Simplify right side
    21,828.40x = 468,598,994.16
  5. Step 5: Solve for x
    x = 468,598,994.16/21,828.40
  6. Step 6: Final answer
    x = 21,467.40

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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.