Home / 47,178.28-70,756.08-13,889.30

Finding the Fourth Proportional to 47,178.28, 70,756.08 and 13,889.30

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Solution

The fourth proportional to 47,178.28, 70,756.08 and 13,889.30 is: 20,830.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,178.28 : 70,756.08 = 13,889.30 : x
  2. Step 2: Convert to fraction form
    47,178.28/70,756.08 = 13,889.30/x
  3. Step 3: Cross multiply
    47,178.28x = 70,756.08 × 13,889.30
  4. Step 4: Simplify right side
    47,178.28x = 982,752,421.94
  5. Step 5: Solve for x
    x = 982,752,421.94/47,178.28
  6. Step 6: Final answer
    x = 20,830.61

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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.