Home / 16,890.40-25,357.20-8,999.20

Finding the Fourth Proportional to 16,890.40, 25,357.20 and 8,999.20

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Solution

The fourth proportional to 16,890.40, 25,357.20 and 8,999.20 is: 13,510.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,890.40 : 25,357.20 = 8,999.20 : x
  2. Step 2: Convert to fraction form
    16,890.40/25,357.20 = 8,999.20/x
  3. Step 3: Cross multiply
    16,890.40x = 25,357.20 × 8,999.20
  4. Step 4: Simplify right side
    16,890.40x = 228,194,514.24
  5. Step 5: Solve for x
    x = 228,194,514.24/16,890.40
  6. Step 6: Final answer
    x = 13,510.31

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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.