Home / 43,384.50-64,972.26-21,143.52

Finding the Fourth Proportional to 43,384.50, 64,972.26 and 21,143.52

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Solution

The fourth proportional to 43,384.50, 64,972.26 and 21,143.52 is: 31,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,384.50 : 64,972.26 = 21,143.52 : x
  2. Step 2: Convert to fraction form
    43,384.50/64,972.26 = 21,143.52/x
  3. Step 3: Cross multiply
    43,384.50x = 64,972.26 × 21,143.52
  4. Step 4: Simplify right side
    43,384.50x = 1,373,742,278.76
  5. Step 5: Solve for x
    x = 1,373,742,278.76/43,384.50
  6. Step 6: Final answer
    x = 31,664.36

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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.