Home / 42,811.20-64,223.64-13,222.08

Finding the Fourth Proportional to 42,811.20, 64,223.64 and 13,222.08

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Solution

The fourth proportional to 42,811.20, 64,223.64 and 13,222.08 is: 19,835.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,811.20 : 64,223.64 = 13,222.08 : x
  2. Step 2: Convert to fraction form
    42,811.20/64,223.64 = 13,222.08/x
  3. Step 3: Cross multiply
    42,811.20x = 64,223.64 × 13,222.08
  4. Step 4: Simplify right side
    42,811.20x = 849,170,105.97
  5. Step 5: Solve for x
    x = 849,170,105.97/42,811.20
  6. Step 6: Final answer
    x = 19,835.23

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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.