Home / 28,308.89-39,065.29-18,237.76

Finding the Fourth Proportional to 28,308.89, 39,065.29 and 18,237.76

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Solution

The fourth proportional to 28,308.89, 39,065.29 and 18,237.76 is: 25,167.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,308.89 : 39,065.29 = 18,237.76 : x
  2. Step 2: Convert to fraction form
    28,308.89/39,065.29 = 18,237.76/x
  3. Step 3: Cross multiply
    28,308.89x = 39,065.29 × 18,237.76
  4. Step 4: Simplify right side
    28,308.89x = 712,463,240.09
  5. Step 5: Solve for x
    x = 712,463,240.09/28,308.89
  6. Step 6: Final answer
    x = 25,167.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.