Home / 12,320.19-18,476.91-4,421.25

Finding the Fourth Proportional to 12,320.19, 18,476.91 and 4,421.25

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Solution

The fourth proportional to 12,320.19, 18,476.91 and 4,421.25 is: 6,630.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.19 : 18,476.91 = 4,421.25 : x
  2. Step 2: Convert to fraction form
    12,320.19/18,476.91 = 4,421.25/x
  3. Step 3: Cross multiply
    12,320.19x = 18,476.91 × 4,421.25
  4. Step 4: Simplify right side
    12,320.19x = 81,691,038.34
  5. Step 5: Solve for x
    x = 81,691,038.34/12,320.19
  6. Step 6: Final answer
    x = 6,630.66

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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.