Home / 42,619.78-63,929.64-11,455.02

Finding the Fourth Proportional to 42,619.78, 63,929.64 and 11,455.02

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Solution

The fourth proportional to 42,619.78, 63,929.64 and 11,455.02 is: 17,182.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,619.78 : 63,929.64 = 11,455.02 : x
  2. Step 2: Convert to fraction form
    42,619.78/63,929.64 = 11,455.02/x
  3. Step 3: Cross multiply
    42,619.78x = 63,929.64 × 11,455.02
  4. Step 4: Simplify right side
    42,619.78x = 732,315,304.79
  5. Step 5: Solve for x
    x = 732,315,304.79/42,619.78
  6. Step 6: Final answer
    x = 17,182.52

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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.