Home / 14,289.12-21,434.49-4,929.57

Finding the Fourth Proportional to 14,289.12, 21,434.49 and 4,929.57

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Solution

The fourth proportional to 14,289.12, 21,434.49 and 4,929.57 is: 7,394.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.12 : 21,434.49 = 4,929.57 : x
  2. Step 2: Convert to fraction form
    14,289.12/21,434.49 = 4,929.57/x
  3. Step 3: Cross multiply
    14,289.12x = 21,434.49 × 4,929.57
  4. Step 4: Simplify right side
    14,289.12x = 105,662,818.87
  5. Step 5: Solve for x
    x = 105,662,818.87/14,289.12
  6. Step 6: Final answer
    x = 7,394.63

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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.