Home / 28,353.34-39,127.62-15,778

Finding the Fourth Proportional to 28,353.34, 39,127.62 and 15,778

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Solution

The fourth proportional to 28,353.34, 39,127.62 and 15,778 is: 21,773.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.34 : 39,127.62 = 15,778 : x
  2. Step 2: Convert to fraction form
    28,353.34/39,127.62 = 15,778/x
  3. Step 3: Cross multiply
    28,353.34x = 39,127.62 × 15,778
  4. Step 4: Simplify right side
    28,353.34x = 617,355,588.36
  5. Step 5: Solve for x
    x = 617,355,588.36/28,353.34
  6. Step 6: Final answer
    x = 21,773.65

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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.