Home / 39,765.78-59,647.12-13,470.52

Finding the Fourth Proportional to 39,765.78, 59,647.12 and 13,470.52

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Solution

The fourth proportional to 39,765.78, 59,647.12 and 13,470.52 is: 20,205.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,765.78 : 59,647.12 = 13,470.52 : x
  2. Step 2: Convert to fraction form
    39,765.78/59,647.12 = 13,470.52/x
  3. Step 3: Cross multiply
    39,765.78x = 59,647.12 × 13,470.52
  4. Step 4: Simplify right side
    39,765.78x = 803,477,722.90
  5. Step 5: Solve for x
    x = 803,477,722.90/39,765.78
  6. Step 6: Final answer
    x = 20,205.25

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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.