Home / 14,288.74-21,438.24-6,390.58

Finding the Fourth Proportional to 14,288.74, 21,438.24 and 6,390.58

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Solution

The fourth proportional to 14,288.74, 21,438.24 and 6,390.58 is: 9,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.74 : 21,438.24 = 6,390.58 : x
  2. Step 2: Convert to fraction form
    14,288.74/21,438.24 = 6,390.58/x
  3. Step 3: Cross multiply
    14,288.74x = 21,438.24 × 6,390.58
  4. Step 4: Simplify right side
    14,288.74x = 137,002,787.78
  5. Step 5: Solve for x
    x = 137,002,787.78/14,288.74
  6. Step 6: Final answer
    x = 9,588.16

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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.