Home / 39,281.75-58,931.84-12,986.31

Finding the Fourth Proportional to 39,281.75, 58,931.84 and 12,986.31

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Solution

The fourth proportional to 39,281.75, 58,931.84 and 12,986.31 is: 19,482.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,281.75 : 58,931.84 = 12,986.31 : x
  2. Step 2: Convert to fraction form
    39,281.75/58,931.84 = 12,986.31/x
  3. Step 3: Cross multiply
    39,281.75x = 58,931.84 × 12,986.31
  4. Step 4: Simplify right side
    39,281.75x = 765,307,143.11
  5. Step 5: Solve for x
    x = 765,307,143.11/39,281.75
  6. Step 6: Final answer
    x = 19,482.51

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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.