Home / 20,457.02-28,231.50-11,504.48

Finding the Fourth Proportional to 20,457.02, 28,231.50 and 11,504.48

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Solution

The fourth proportional to 20,457.02, 28,231.50 and 11,504.48 is: 15,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.02 : 28,231.50 = 11,504.48 : x
  2. Step 2: Convert to fraction form
    20,457.02/28,231.50 = 11,504.48/x
  3. Step 3: Cross multiply
    20,457.02x = 28,231.50 × 11,504.48
  4. Step 4: Simplify right side
    20,457.02x = 324,788,727.12
  5. Step 5: Solve for x
    x = 324,788,727.12/20,457.02
  6. Step 6: Final answer
    x = 15,876.64

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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.