Home / 13,995.40-21,000.48-6,205

Finding the Fourth Proportional to 13,995.40, 21,000.48 and 6,205

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Solution

The fourth proportional to 13,995.40, 21,000.48 and 6,205 is: 9,310.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.40 : 21,000.48 = 6,205 : x
  2. Step 2: Convert to fraction form
    13,995.40/21,000.48 = 6,205/x
  3. Step 3: Cross multiply
    13,995.40x = 21,000.48 × 6,205
  4. Step 4: Simplify right side
    13,995.40x = 130,307,978.40
  5. Step 5: Solve for x
    x = 130,307,978.40/13,995.40
  6. Step 6: Final answer
    x = 9,310.77

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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.