Home / 39,986.08-59,938.96-13,672.80

Finding the Fourth Proportional to 39,986.08, 59,938.96 and 13,672.80

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Solution

The fourth proportional to 39,986.08, 59,938.96 and 13,672.80 is: 20,495.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,986.08 : 59,938.96 = 13,672.80 : x
  2. Step 2: Convert to fraction form
    39,986.08/59,938.96 = 13,672.80/x
  3. Step 3: Cross multiply
    39,986.08x = 59,938.96 × 13,672.80
  4. Step 4: Simplify right side
    39,986.08x = 819,533,412.29
  5. Step 5: Solve for x
    x = 819,533,412.29/39,986.08
  6. Step 6: Final answer
    x = 20,495.47

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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.