Home / 47,211.20-70,828.68-13,929.92

Finding the Fourth Proportional to 47,211.20, 70,828.68 and 13,929.92

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Solution

The fourth proportional to 47,211.20, 70,828.68 and 13,929.92 is: 20,898.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,211.20 : 70,828.68 = 13,929.92 : x
  2. Step 2: Convert to fraction form
    47,211.20/70,828.68 = 13,929.92/x
  3. Step 3: Cross multiply
    47,211.20x = 70,828.68 × 13,929.92
  4. Step 4: Simplify right side
    47,211.20x = 986,637,846.11
  5. Step 5: Solve for x
    x = 986,637,846.11/47,211.20
  6. Step 6: Final answer
    x = 20,898.39

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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.