Home / 28,187.92-42,281.57-8,465.63

Finding the Fourth Proportional to 28,187.92, 42,281.57 and 8,465.63

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Solution

The fourth proportional to 28,187.92, 42,281.57 and 8,465.63 is: 12,698.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.92 : 42,281.57 = 8,465.63 : x
  2. Step 2: Convert to fraction form
    28,187.92/42,281.57 = 8,465.63/x
  3. Step 3: Cross multiply
    28,187.92x = 42,281.57 × 8,465.63
  4. Step 4: Simplify right side
    28,187.92x = 357,940,254.31
  5. Step 5: Solve for x
    x = 357,940,254.31/28,187.92
  6. Step 6: Final answer
    x = 12,698.36

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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.