Home / 14,199.36-21,305.52-7,278.72

Finding the Fourth Proportional to 14,199.36, 21,305.52 and 7,278.72

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Solution

The fourth proportional to 14,199.36, 21,305.52 and 7,278.72 is: 10,921.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,199.36 : 21,305.52 = 7,278.72 : x
  2. Step 2: Convert to fraction form
    14,199.36/21,305.52 = 7,278.72/x
  3. Step 3: Cross multiply
    14,199.36x = 21,305.52 × 7,278.72
  4. Step 4: Simplify right side
    14,199.36x = 155,076,914.53
  5. Step 5: Solve for x
    x = 155,076,914.53/14,199.36
  6. Step 6: Final answer
    x = 10,921.40

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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.