Home / 21,364.40-32,014.20-14,430.80

Finding the Fourth Proportional to 21,364.40, 32,014.20 and 14,430.80

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Solution

The fourth proportional to 21,364.40, 32,014.20 and 14,430.80 is: 21,624.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,364.40 : 32,014.20 = 14,430.80 : x
  2. Step 2: Convert to fraction form
    21,364.40/32,014.20 = 14,430.80/x
  3. Step 3: Cross multiply
    21,364.40x = 32,014.20 × 14,430.80
  4. Step 4: Simplify right side
    21,364.40x = 461,990,517.36
  5. Step 5: Solve for x
    x = 461,990,517.36/21,364.40
  6. Step 6: Final answer
    x = 21,624.32

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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.