Home / 42,918.31-64,384.44-13,343.01

Finding the Fourth Proportional to 42,918.31, 64,384.44 and 13,343.01

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Solution

The fourth proportional to 42,918.31, 64,384.44 and 13,343.01 is: 20,016.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,918.31 : 64,384.44 = 13,343.01 : x
  2. Step 2: Convert to fraction form
    42,918.31/64,384.44 = 13,343.01/x
  3. Step 3: Cross multiply
    42,918.31x = 64,384.44 × 13,343.01
  4. Step 4: Simplify right side
    42,918.31x = 859,082,226.76
  5. Step 5: Solve for x
    x = 859,082,226.76/42,918.31
  6. Step 6: Final answer
    x = 20,016.68

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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.