Home / 20,651.48-28,499.02-11,219.98

Finding the Fourth Proportional to 20,651.48, 28,499.02 and 11,219.98

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Solution

The fourth proportional to 20,651.48, 28,499.02 and 11,219.98 is: 15,483.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.48 : 28,499.02 = 11,219.98 : x
  2. Step 2: Convert to fraction form
    20,651.48/28,499.02 = 11,219.98/x
  3. Step 3: Cross multiply
    20,651.48x = 28,499.02 × 11,219.98
  4. Step 4: Simplify right side
    20,651.48x = 319,758,434.42
  5. Step 5: Solve for x
    x = 319,758,434.42/20,651.48
  6. Step 6: Final answer
    x = 15,483.56

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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.