Home / 39,281.46-58,931.42-12,986.21

Finding the Fourth Proportional to 39,281.46, 58,931.42 and 12,986.21

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Solution

The fourth proportional to 39,281.46, 58,931.42 and 12,986.21 is: 19,482.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,281.46 : 58,931.42 = 12,986.21 : x
  2. Step 2: Convert to fraction form
    39,281.46/58,931.42 = 12,986.21/x
  3. Step 3: Cross multiply
    39,281.46x = 58,931.42 × 12,986.21
  4. Step 4: Simplify right side
    39,281.46x = 765,295,436.13
  5. Step 5: Solve for x
    x = 765,295,436.13/39,281.46
  6. Step 6: Final answer
    x = 19,482.36

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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.