Home / 20,457.69-28,233.09-12,501.44

Finding the Fourth Proportional to 20,457.69, 28,233.09 and 12,501.44

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Solution

The fourth proportional to 20,457.69, 28,233.09 and 12,501.44 is: 17,252.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.69 : 28,233.09 = 12,501.44 : x
  2. Step 2: Convert to fraction form
    20,457.69/28,233.09 = 12,501.44/x
  3. Step 3: Cross multiply
    20,457.69x = 28,233.09 × 12,501.44
  4. Step 4: Simplify right side
    20,457.69x = 352,954,139.48
  5. Step 5: Solve for x
    x = 352,954,139.48/20,457.69
  6. Step 6: Final answer
    x = 17,252.88

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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.