Home / 13,291.50-19,937.22-3,430.76

Finding the Fourth Proportional to 13,291.50, 19,937.22 and 3,430.76

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Solution

The fourth proportional to 13,291.50, 19,937.22 and 3,430.76 is: 5,146.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.50 : 19,937.22 = 3,430.76 : x
  2. Step 2: Convert to fraction form
    13,291.50/19,937.22 = 3,430.76/x
  3. Step 3: Cross multiply
    13,291.50x = 19,937.22 × 3,430.76
  4. Step 4: Simplify right side
    13,291.50x = 68,399,816.89
  5. Step 5: Solve for x
    x = 68,399,816.89/13,291.50
  6. Step 6: Final answer
    x = 5,146.13

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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.