Home / 28,007.91-42,018.39-12,426.75

Finding the Fourth Proportional to 28,007.91, 42,018.39 and 12,426.75

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Solution

The fourth proportional to 28,007.91, 42,018.39 and 12,426.75 is: 18,643.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.91 : 42,018.39 = 12,426.75 : x
  2. Step 2: Convert to fraction form
    28,007.91/42,018.39 = 12,426.75/x
  3. Step 3: Cross multiply
    28,007.91x = 42,018.39 × 12,426.75
  4. Step 4: Simplify right side
    28,007.91x = 522,152,027.93
  5. Step 5: Solve for x
    x = 522,152,027.93/28,007.91
  6. Step 6: Final answer
    x = 18,643.02

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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.