Home / 14,715.36-20,307.24-8,427.84

Finding the Fourth Proportional to 14,715.36, 20,307.24 and 8,427.84

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Solution

The fourth proportional to 14,715.36, 20,307.24 and 8,427.84 is: 11,630.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,715.36 : 20,307.24 = 8,427.84 : x
  2. Step 2: Convert to fraction form
    14,715.36/20,307.24 = 8,427.84/x
  3. Step 3: Cross multiply
    14,715.36x = 20,307.24 × 8,427.84
  4. Step 4: Simplify right side
    14,715.36x = 171,146,169.56
  5. Step 5: Solve for x
    x = 171,146,169.56/14,715.36
  6. Step 6: Final answer
    x = 11,630.44

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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.