Home / 20,784.02-28,680.45-11,350.58

Finding the Fourth Proportional to 20,784.02, 28,680.45 and 11,350.58

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Solution

The fourth proportional to 20,784.02, 28,680.45 and 11,350.58 is: 15,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.02 : 28,680.45 = 11,350.58 : x
  2. Step 2: Convert to fraction form
    20,784.02/28,680.45 = 11,350.58/x
  3. Step 3: Cross multiply
    20,784.02x = 28,680.45 × 11,350.58
  4. Step 4: Simplify right side
    20,784.02x = 325,539,742.16
  5. Step 5: Solve for x
    x = 325,539,742.16/20,784.02
  6. Step 6: Final answer
    x = 15,662.98

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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.