Home / 42,805.84-64,220.55-17,857.60

Finding the Fourth Proportional to 42,805.84, 64,220.55 and 17,857.60

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Solution

The fourth proportional to 42,805.84, 64,220.55 and 17,857.60 is: 26,791.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,805.84 : 64,220.55 = 17,857.60 : x
  2. Step 2: Convert to fraction form
    42,805.84/64,220.55 = 17,857.60/x
  3. Step 3: Cross multiply
    42,805.84x = 64,220.55 × 17,857.60
  4. Step 4: Simplify right side
    42,805.84x = 1,146,824,893.68
  5. Step 5: Solve for x
    x = 1,146,824,893.68/42,805.84
  6. Step 6: Final answer
    x = 26,791.32

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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.