Home / 13,108.14-18,089.64-7,140.06

Finding the Fourth Proportional to 13,108.14, 18,089.64 and 7,140.06

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Solution

The fourth proportional to 13,108.14, 18,089.64 and 7,140.06 is: 9,853.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.14 : 18,089.64 = 7,140.06 : x
  2. Step 2: Convert to fraction form
    13,108.14/18,089.64 = 7,140.06/x
  3. Step 3: Cross multiply
    13,108.14x = 18,089.64 × 7,140.06
  4. Step 4: Simplify right side
    13,108.14x = 129,161,114.98
  5. Step 5: Solve for x
    x = 129,161,114.98/13,108.14
  6. Step 6: Final answer
    x = 9,853.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.