Home / 42,838.40-64,267.86-13,256.26

Finding the Fourth Proportional to 42,838.40, 64,267.86 and 13,256.26

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Solution

The fourth proportional to 42,838.40, 64,267.86 and 13,256.26 is: 19,887.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,838.40 : 64,267.86 = 13,256.26 : x
  2. Step 2: Convert to fraction form
    42,838.40/64,267.86 = 13,256.26/x
  3. Step 3: Cross multiply
    42,838.40x = 64,267.86 × 13,256.26
  4. Step 4: Simplify right side
    42,838.40x = 851,951,350.84
  5. Step 5: Solve for x
    x = 851,951,350.84/42,838.40
  6. Step 6: Final answer
    x = 19,887.56

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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.