Home / 28,353.98-39,128.17-15,606.89

Finding the Fourth Proportional to 28,353.98, 39,128.17 and 15,606.89

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Solution

The fourth proportional to 28,353.98, 39,128.17 and 15,606.89 is: 21,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.98 : 39,128.17 = 15,606.89 : x
  2. Step 2: Convert to fraction form
    28,353.98/39,128.17 = 15,606.89/x
  3. Step 3: Cross multiply
    28,353.98x = 39,128.17 × 15,606.89
  4. Step 4: Simplify right side
    28,353.98x = 610,669,045.09
  5. Step 5: Solve for x
    x = 610,669,045.09/28,353.98
  6. Step 6: Final answer
    x = 21,537.33

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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.