Home / 16,390.74-22,621.14-9,318.24

Finding the Fourth Proportional to 16,390.74, 22,621.14 and 9,318.24

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Solution

The fourth proportional to 16,390.74, 22,621.14 and 9,318.24 is: 12,860.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.74 : 22,621.14 = 9,318.24 : x
  2. Step 2: Convert to fraction form
    16,390.74/22,621.14 = 9,318.24/x
  3. Step 3: Cross multiply
    16,390.74x = 22,621.14 × 9,318.24
  4. Step 4: Simplify right side
    16,390.74x = 210,789,211.59
  5. Step 5: Solve for x
    x = 210,789,211.59/16,390.74
  6. Step 6: Final answer
    x = 12,860.26

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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.