Home / 39,171.76-58,745.22-12,870.40

Finding the Fourth Proportional to 39,171.76, 58,745.22 and 12,870.40

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Solution

The fourth proportional to 39,171.76, 58,745.22 and 12,870.40 is: 19,301.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,171.76 : 58,745.22 = 12,870.40 : x
  2. Step 2: Convert to fraction form
    39,171.76/58,745.22 = 12,870.40/x
  3. Step 3: Cross multiply
    39,171.76x = 58,745.22 × 12,870.40
  4. Step 4: Simplify right side
    39,171.76x = 756,074,479.49
  5. Step 5: Solve for x
    x = 756,074,479.49/39,171.76
  6. Step 6: Final answer
    x = 19,301.52

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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.