Home / 42,805.20-64,214.64-13,216.08

Finding the Fourth Proportional to 42,805.20, 64,214.64 and 13,216.08

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Solution

The fourth proportional to 42,805.20, 64,214.64 and 13,216.08 is: 19,826.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,805.20 : 64,214.64 = 13,216.08 : x
  2. Step 2: Convert to fraction form
    42,805.20/64,214.64 = 13,216.08/x
  3. Step 3: Cross multiply
    42,805.20x = 64,214.64 × 13,216.08
  4. Step 4: Simplify right side
    42,805.20x = 848,665,819.41
  5. Step 5: Solve for x
    x = 848,665,819.41/42,805.20
  6. Step 6: Final answer
    x = 19,826.23

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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.