Home / 14,218.78-21,302.58-8,372.20

Finding the Fourth Proportional to 14,218.78, 21,302.58 and 8,372.20

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Solution

The fourth proportional to 14,218.78, 21,302.58 and 8,372.20 is: 12,543.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.78 : 21,302.58 = 8,372.20 : x
  2. Step 2: Convert to fraction form
    14,218.78/21,302.58 = 8,372.20/x
  3. Step 3: Cross multiply
    14,218.78x = 21,302.58 × 8,372.20
  4. Step 4: Simplify right side
    14,218.78x = 178,349,460.28
  5. Step 5: Solve for x
    x = 178,349,460.28/14,218.78
  6. Step 6: Final answer
    x = 12,543.23

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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.