Home / 18,312.72-25,267.32-12,355.44

Finding the Fourth Proportional to 18,312.72, 25,267.32 and 12,355.44

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Solution

The fourth proportional to 18,312.72, 25,267.32 and 12,355.44 is: 17,047.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.72 : 25,267.32 = 12,355.44 : x
  2. Step 2: Convert to fraction form
    18,312.72/25,267.32 = 12,355.44/x
  3. Step 3: Cross multiply
    18,312.72x = 25,267.32 × 12,355.44
  4. Step 4: Simplify right side
    18,312.72x = 312,188,856.22
  5. Step 5: Solve for x
    x = 312,188,856.22/18,312.72
  6. Step 6: Final answer
    x = 17,047.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.