Home / 28,260.14-42,390.59-8,538.86

Finding the Fourth Proportional to 28,260.14, 42,390.59 and 8,538.86

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Solution

The fourth proportional to 28,260.14, 42,390.59 and 8,538.86 is: 12,808.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.14 : 42,390.59 = 8,538.86 : x
  2. Step 2: Convert to fraction form
    28,260.14/42,390.59 = 8,538.86/x
  3. Step 3: Cross multiply
    28,260.14x = 42,390.59 × 8,538.86
  4. Step 4: Simplify right side
    28,260.14x = 361,967,313.33
  5. Step 5: Solve for x
    x = 361,967,313.33/28,260.14
  6. Step 6: Final answer
    x = 12,808.40

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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.