Home / 20,663.48-28,515.47-11,232.05

Finding the Fourth Proportional to 20,663.48, 28,515.47 and 11,232.05

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Solution

The fourth proportional to 20,663.48, 28,515.47 and 11,232.05 is: 15,500.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.48 : 28,515.47 = 11,232.05 : x
  2. Step 2: Convert to fraction form
    20,663.48/28,515.47 = 11,232.05/x
  3. Step 3: Cross multiply
    20,663.48x = 28,515.47 × 11,232.05
  4. Step 4: Simplify right side
    20,663.48x = 320,286,986.08
  5. Step 5: Solve for x
    x = 320,286,986.08/20,663.48
  6. Step 6: Final answer
    x = 15,500.15

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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.