Home / 43,228.16-64,842.72-13,645.28

Finding the Fourth Proportional to 43,228.16, 64,842.72 and 13,645.28

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Solution

The fourth proportional to 43,228.16, 64,842.72 and 13,645.28 is: 20,468.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,228.16 : 64,842.72 = 13,645.28 : x
  2. Step 2: Convert to fraction form
    43,228.16/64,842.72 = 13,645.28/x
  3. Step 3: Cross multiply
    43,228.16x = 64,842.72 × 13,645.28
  4. Step 4: Simplify right side
    43,228.16x = 884,797,070.36
  5. Step 5: Solve for x
    x = 884,797,070.36/43,228.16
  6. Step 6: Final answer
    x = 20,468.07

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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.