Home / 18,970.08-28,447.83-13,108.92

Finding the Fourth Proportional to 18,970.08, 28,447.83 and 13,108.92

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Solution

The fourth proportional to 18,970.08, 28,447.83 and 13,108.92 is: 19,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.08 : 28,447.83 = 13,108.92 : x
  2. Step 2: Convert to fraction form
    18,970.08/28,447.83 = 13,108.92/x
  3. Step 3: Cross multiply
    18,970.08x = 28,447.83 × 13,108.92
  4. Step 4: Simplify right side
    18,970.08x = 372,920,327.64
  5. Step 5: Solve for x
    x = 372,920,327.64/18,970.08
  6. Step 6: Final answer
    x = 19,658.34

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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.