Home / 20,429.02-28,189.84-11,477.52

Finding the Fourth Proportional to 20,429.02, 28,189.84 and 11,477.52

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Solution

The fourth proportional to 20,429.02, 28,189.84 and 11,477.52 is: 15,837.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.02 : 28,189.84 = 11,477.52 : x
  2. Step 2: Convert to fraction form
    20,429.02/28,189.84 = 11,477.52/x
  3. Step 3: Cross multiply
    20,429.02x = 28,189.84 × 11,477.52
  4. Step 4: Simplify right side
    20,429.02x = 323,549,452.40
  5. Step 5: Solve for x
    x = 323,549,452.40/20,429.02
  6. Step 6: Final answer
    x = 15,837.74

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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.