Home / 15,311.04-21,129.21-8,596.68

Finding the Fourth Proportional to 15,311.04, 21,129.21 and 8,596.68

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Solution

The fourth proportional to 15,311.04, 21,129.21 and 8,596.68 is: 11,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.04 : 21,129.21 = 8,596.68 : x
  2. Step 2: Convert to fraction form
    15,311.04/21,129.21 = 8,596.68/x
  3. Step 3: Cross multiply
    15,311.04x = 21,129.21 × 8,596.68
  4. Step 4: Simplify right side
    15,311.04x = 181,641,057.02
  5. Step 5: Solve for x
    x = 181,641,057.02/15,311.04
  6. Step 6: Final answer
    x = 11,863.40

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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.