Home / 42,928-64,351.68-15,210.88

Finding the Fourth Proportional to 42,928, 64,351.68 and 15,210.88

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Solution

The fourth proportional to 42,928, 64,351.68 and 15,210.88 is: 22,802.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,928 : 64,351.68 = 15,210.88 : x
  2. Step 2: Convert to fraction form
    42,928/64,351.68 = 15,210.88/x
  3. Step 3: Cross multiply
    42,928x = 64,351.68 × 15,210.88
  4. Step 4: Simplify right side
    42,928x = 978,845,682.28
  5. Step 5: Solve for x
    x = 978,845,682.28/42,928
  6. Step 6: Final answer
    x = 22,802.03

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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.