Home / 13,330.98-19,982.57-5,430.06

Finding the Fourth Proportional to 13,330.98, 19,982.57 and 5,430.06

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Solution

The fourth proportional to 13,330.98, 19,982.57 and 5,430.06 is: 8,139.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.98 : 19,982.57 = 5,430.06 : x
  2. Step 2: Convert to fraction form
    13,330.98/19,982.57 = 5,430.06/x
  3. Step 3: Cross multiply
    13,330.98x = 19,982.57 × 5,430.06
  4. Step 4: Simplify right side
    13,330.98x = 108,506,628.92
  5. Step 5: Solve for x
    x = 108,506,628.92/13,330.98
  6. Step 6: Final answer
    x = 8,139.43

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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.