Home / 39,986.40-59,979.68-10,404.19

Finding the Fourth Proportional to 39,986.40, 59,979.68 and 10,404.19

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Solution

The fourth proportional to 39,986.40, 59,979.68 and 10,404.19 is: 15,606.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,986.40 : 59,979.68 = 10,404.19 : x
  2. Step 2: Convert to fraction form
    39,986.40/59,979.68 = 10,404.19/x
  3. Step 3: Cross multiply
    39,986.40x = 59,979.68 × 10,404.19
  4. Step 4: Simplify right side
    39,986.40x = 624,039,986.86
  5. Step 5: Solve for x
    x = 624,039,986.86/39,986.40
  6. Step 6: Final answer
    x = 15,606.31

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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.