Home / 28,106.86-42,155.43-9,638.86

Finding the Fourth Proportional to 28,106.86, 42,155.43 and 9,638.86

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Solution

The fourth proportional to 28,106.86, 42,155.43 and 9,638.86 is: 14,456.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.86 : 42,155.43 = 9,638.86 : x
  2. Step 2: Convert to fraction form
    28,106.86/42,155.43 = 9,638.86/x
  3. Step 3: Cross multiply
    28,106.86x = 42,155.43 × 9,638.86
  4. Step 4: Simplify right side
    28,106.86x = 406,330,288.01
  5. Step 5: Solve for x
    x = 406,330,288.01/28,106.86
  6. Step 6: Final answer
    x = 14,456.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.