Home / 21,867.36-30,191.04-16,821.60

Finding the Fourth Proportional to 21,867.36, 30,191.04 and 16,821.60

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Solution

The fourth proportional to 21,867.36, 30,191.04 and 16,821.60 is: 23,224.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.36 : 30,191.04 = 16,821.60 : x
  2. Step 2: Convert to fraction form
    21,867.36/30,191.04 = 16,821.60/x
  3. Step 3: Cross multiply
    21,867.36x = 30,191.04 × 16,821.60
  4. Step 4: Simplify right side
    21,867.36x = 507,861,598.46
  5. Step 5: Solve for x
    x = 507,861,598.46/21,867.36
  6. Step 6: Final answer
    x = 23,224.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.