Home / 39,780.66-59,658.36-13,479.24

Finding the Fourth Proportional to 39,780.66, 59,658.36 and 13,479.24

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Solution

The fourth proportional to 39,780.66, 59,658.36 and 13,479.24 is: 20,214.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.66 : 59,658.36 = 13,479.24 : x
  2. Step 2: Convert to fraction form
    39,780.66/59,658.36 = 13,479.24/x
  3. Step 3: Cross multiply
    39,780.66x = 59,658.36 × 13,479.24
  4. Step 4: Simplify right side
    39,780.66x = 804,149,352.45
  5. Step 5: Solve for x
    x = 804,149,352.45/39,780.66
  6. Step 6: Final answer
    x = 20,214.58

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1.5x scale

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.