Home / 39,976.81-59,899.60-13,667.20

Finding the Fourth Proportional to 39,976.81, 59,899.60 and 13,667.20

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Solution

The fourth proportional to 39,976.81, 59,899.60 and 13,667.20 is: 20,478.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,976.81 : 59,899.60 = 13,667.20 : x
  2. Step 2: Convert to fraction form
    39,976.81/59,899.60 = 13,667.20/x
  3. Step 3: Cross multiply
    39,976.81x = 59,899.60 × 13,667.20
  4. Step 4: Simplify right side
    39,976.81x = 818,659,445.29
  5. Step 5: Solve for x
    x = 818,659,445.29/39,976.81
  6. Step 6: Final answer
    x = 20,478.36

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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.