Home / 18,409.32-25,388.10-12,030.12

Finding the Fourth Proportional to 18,409.32, 25,388.10 and 12,030.12

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Solution

The fourth proportional to 18,409.32, 25,388.10 and 12,030.12 is: 16,590.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.32 : 25,388.10 = 12,030.12 : x
  2. Step 2: Convert to fraction form
    18,409.32/25,388.10 = 12,030.12/x
  3. Step 3: Cross multiply
    18,409.32x = 25,388.10 × 12,030.12
  4. Step 4: Simplify right side
    18,409.32x = 305,421,889.57
  5. Step 5: Solve for x
    x = 305,421,889.57/18,409.32
  6. Step 6: Final answer
    x = 16,590.61

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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.