Home / 13,291.24-19,940.75-3,931.50

Finding the Fourth Proportional to 13,291.24, 19,940.75 and 3,931.50

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Solution

The fourth proportional to 13,291.24, 19,940.75 and 3,931.50 is: 5,898.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.24 : 19,940.75 = 3,931.50 : x
  2. Step 2: Convert to fraction form
    13,291.24/19,940.75 = 3,931.50/x
  3. Step 3: Cross multiply
    13,291.24x = 19,940.75 × 3,931.50
  4. Step 4: Simplify right side
    13,291.24x = 78,397,058.63
  5. Step 5: Solve for x
    x = 78,397,058.63/13,291.24
  6. Step 6: Final answer
    x = 5,898.40

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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.