Home / 20,646.60-28,499.02-12,148.24

Finding the Fourth Proportional to 20,646.60, 28,499.02 and 12,148.24

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Solution

The fourth proportional to 20,646.60, 28,499.02 and 12,148.24 is: 16,768.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.60 : 28,499.02 = 12,148.24 : x
  2. Step 2: Convert to fraction form
    20,646.60/28,499.02 = 12,148.24/x
  3. Step 3: Cross multiply
    20,646.60x = 28,499.02 × 12,148.24
  4. Step 4: Simplify right side
    20,646.60x = 346,212,934.72
  5. Step 5: Solve for x
    x = 346,212,934.72/20,646.60
  6. Step 6: Final answer
    x = 16,768.52

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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.