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Finding the Fourth Proportional to 39,153.60, 58,735.80 and 14,187.60

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Solution

The fourth proportional to 39,153.60, 58,735.80 and 14,187.60 is: 21,283.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,153.60 : 58,735.80 = 14,187.60 : x
  2. Step 2: Convert to fraction form
    39,153.60/58,735.80 = 14,187.60/x
  3. Step 3: Cross multiply
    39,153.60x = 58,735.80 × 14,187.60
  4. Step 4: Simplify right side
    39,153.60x = 833,320,036.08
  5. Step 5: Solve for x
    x = 833,320,036.08/39,153.60
  6. Step 6: Final answer
    x = 21,283.36

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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.