Home / 39,986.21-59,979.60-15,031.91

Finding the Fourth Proportional to 39,986.21, 59,979.60 and 15,031.91

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Solution

The fourth proportional to 39,986.21, 59,979.60 and 15,031.91 is: 22,547.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,986.21 : 59,979.60 = 15,031.91 : x
  2. Step 2: Convert to fraction form
    39,986.21/59,979.60 = 15,031.91/x
  3. Step 3: Cross multiply
    39,986.21x = 59,979.60 × 15,031.91
  4. Step 4: Simplify right side
    39,986.21x = 901,607,649.14
  5. Step 5: Solve for x
    x = 901,607,649.14/39,986.21
  6. Step 6: Final answer
    x = 22,547.97

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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.