Home / 28,095.20-42,137.40-8,374.40

Finding the Fourth Proportional to 28,095.20, 42,137.40 and 8,374.40

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Solution

The fourth proportional to 28,095.20, 42,137.40 and 8,374.40 is: 12,559.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,095.20 : 42,137.40 = 8,374.40 : x
  2. Step 2: Convert to fraction form
    28,095.20/42,137.40 = 8,374.40/x
  3. Step 3: Cross multiply
    28,095.20x = 42,137.40 × 8,374.40
  4. Step 4: Simplify right side
    28,095.20x = 352,875,442.56
  5. Step 5: Solve for x
    x = 352,875,442.56/28,095.20
  6. Step 6: Final answer
    x = 12,559.99

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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.