Home / 42,342.54-63,513.81-11,178.06

Finding the Fourth Proportional to 42,342.54, 63,513.81 and 11,178.06

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Solution

The fourth proportional to 42,342.54, 63,513.81 and 11,178.06 is: 16,767.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,342.54 : 63,513.81 = 11,178.06 : x
  2. Step 2: Convert to fraction form
    42,342.54/63,513.81 = 11,178.06/x
  3. Step 3: Cross multiply
    42,342.54x = 63,513.81 × 11,178.06
  4. Step 4: Simplify right side
    42,342.54x = 709,961,179.01
  5. Step 5: Solve for x
    x = 709,961,179.01/42,342.54
  6. Step 6: Final answer
    x = 16,767.09

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1.5x scale

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.