Home / 13,108.04-18,089.44-7,139.96

Finding the Fourth Proportional to 13,108.04, 18,089.44 and 7,139.96

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Solution

The fourth proportional to 13,108.04, 18,089.44 and 7,139.96 is: 9,853.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.04 : 18,089.44 = 7,139.96 : x
  2. Step 2: Convert to fraction form
    13,108.04/18,089.44 = 7,139.96/x
  3. Step 3: Cross multiply
    13,108.04x = 18,089.44 × 7,139.96
  4. Step 4: Simplify right side
    13,108.04x = 129,157,878.02
  5. Step 5: Solve for x
    x = 129,157,878.02/13,108.04
  6. Step 6: Final answer
    x = 9,853.33

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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.