Home / 39,964.71-59,945.64-9,979.12

Finding the Fourth Proportional to 39,964.71, 59,945.64 and 9,979.12

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Solution

The fourth proportional to 39,964.71, 59,945.64 and 9,979.12 is: 14,968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,964.71 : 59,945.64 = 9,979.12 : x
  2. Step 2: Convert to fraction form
    39,964.71/59,945.64 = 9,979.12/x
  3. Step 3: Cross multiply
    39,964.71x = 59,945.64 × 9,979.12
  4. Step 4: Simplify right side
    39,964.71x = 598,204,435.31
  5. Step 5: Solve for x
    x = 598,204,435.31/39,964.71
  6. Step 6: Final answer
    x = 14,968.32

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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.