Home / 14,538.20-21,807.30-5,307.80

Finding the Fourth Proportional to 14,538.20, 21,807.30 and 5,307.80

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Solution

The fourth proportional to 14,538.20, 21,807.30 and 5,307.80 is: 7,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,538.20 : 21,807.30 = 5,307.80 : x
  2. Step 2: Convert to fraction form
    14,538.20/21,807.30 = 5,307.80/x
  3. Step 3: Cross multiply
    14,538.20x = 21,807.30 × 5,307.80
  4. Step 4: Simplify right side
    14,538.20x = 115,748,786.94
  5. Step 5: Solve for x
    x = 115,748,786.94/14,538.20
  6. Step 6: Final answer
    x = 7,961.70

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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.