Home / 20,748-28,632.24-11,316.60

Finding the Fourth Proportional to 20,748, 28,632.24 and 11,316.60

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Solution

The fourth proportional to 20,748, 28,632.24 and 11,316.60 is: 15,616.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748 : 28,632.24 = 11,316.60 : x
  2. Step 2: Convert to fraction form
    20,748/28,632.24 = 11,316.60/x
  3. Step 3: Cross multiply
    20,748x = 28,632.24 × 11,316.60
  4. Step 4: Simplify right side
    20,748x = 324,019,607.18
  5. Step 5: Solve for x
    x = 324,019,607.18/20,748
  6. Step 6: Final answer
    x = 15,616.91

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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.