Home / 14,725.90-20,322.28-8,439.48

Finding the Fourth Proportional to 14,725.90, 20,322.28 and 8,439.48

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Solution

The fourth proportional to 14,725.90, 20,322.28 and 8,439.48 is: 11,646.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,725.90 : 20,322.28 = 8,439.48 : x
  2. Step 2: Convert to fraction form
    14,725.90/20,322.28 = 8,439.48/x
  3. Step 3: Cross multiply
    14,725.90x = 20,322.28 × 8,439.48
  4. Step 4: Simplify right side
    14,725.90x = 171,509,475.61
  5. Step 5: Solve for x
    x = 171,509,475.61/14,725.90
  6. Step 6: Final answer
    x = 11,646.79

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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.