Home / 39,987.26-59,979.06-13,331.37

Finding the Fourth Proportional to 39,987.26, 59,979.06 and 13,331.37

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Solution

The fourth proportional to 39,987.26, 59,979.06 and 13,331.37 is: 19,996.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.26 : 59,979.06 = 13,331.37 : x
  2. Step 2: Convert to fraction form
    39,987.26/59,979.06 = 13,331.37/x
  3. Step 3: Cross multiply
    39,987.26x = 59,979.06 × 13,331.37
  4. Step 4: Simplify right side
    39,987.26x = 799,603,041.11
  5. Step 5: Solve for x
    x = 799,603,041.11/39,987.26
  6. Step 6: Final answer
    x = 19,996.45

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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.