Home / 18,996.32-28,443.36-12,406.16

Finding the Fourth Proportional to 18,996.32, 28,443.36 and 12,406.16

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Solution

The fourth proportional to 18,996.32, 28,443.36 and 12,406.16 is: 18,575.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.32 : 28,443.36 = 12,406.16 : x
  2. Step 2: Convert to fraction form
    18,996.32/28,443.36 = 12,406.16/x
  3. Step 3: Cross multiply
    18,996.32x = 28,443.36 × 12,406.16
  4. Step 4: Simplify right side
    18,996.32x = 352,872,875.10
  5. Step 5: Solve for x
    x = 352,872,875.10/18,996.32
  6. Step 6: Final answer
    x = 18,575.85

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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.