Home / 18,895.08-28,319.38-8,353.74

Finding the Fourth Proportional to 18,895.08, 28,319.38 and 8,353.74

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Solution

The fourth proportional to 18,895.08, 28,319.38 and 8,353.74 is: 12,520.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,895.08 : 28,319.38 = 8,353.74 : x
  2. Step 2: Convert to fraction form
    18,895.08/28,319.38 = 8,353.74/x
  3. Step 3: Cross multiply
    18,895.08x = 28,319.38 × 8,353.74
  4. Step 4: Simplify right side
    18,895.08x = 236,572,737.48
  5. Step 5: Solve for x
    x = 236,572,737.48/18,895.08
  6. Step 6: Final answer
    x = 12,520.34

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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.