Home / 28,000.14-42,000.77-8,278.68

Finding the Fourth Proportional to 28,000.14, 42,000.77 and 8,278.68

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Solution

The fourth proportional to 28,000.14, 42,000.77 and 8,278.68 is: 12,418.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.14 : 42,000.77 = 8,278.68 : x
  2. Step 2: Convert to fraction form
    28,000.14/42,000.77 = 8,278.68/x
  3. Step 3: Cross multiply
    28,000.14x = 42,000.77 × 8,278.68
  4. Step 4: Simplify right side
    28,000.14x = 347,710,893.19
  5. Step 5: Solve for x
    x = 347,710,893.19/28,000.14
  6. Step 6: Final answer
    x = 12,418.18

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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.