Home / 28,144.96-38,830.65-16,660.47

Finding the Fourth Proportional to 28,144.96, 38,830.65 and 16,660.47

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Solution

The fourth proportional to 28,144.96, 38,830.65 and 16,660.47 is: 22,985.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.96 : 38,830.65 = 16,660.47 : x
  2. Step 2: Convert to fraction form
    28,144.96/38,830.65 = 16,660.47/x
  3. Step 3: Cross multiply
    28,144.96x = 38,830.65 × 16,660.47
  4. Step 4: Simplify right side
    28,144.96x = 646,936,879.41
  5. Step 5: Solve for x
    x = 646,936,879.41/28,144.96
  6. Step 6: Final answer
    x = 22,985.89

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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.