Home / 13,207.05-18,225.65-7,239.09

Finding the Fourth Proportional to 13,207.05, 18,225.65 and 7,239.09

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Solution

The fourth proportional to 13,207.05, 18,225.65 and 7,239.09 is: 9,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.05 : 18,225.65 = 7,239.09 : x
  2. Step 2: Convert to fraction form
    13,207.05/18,225.65 = 7,239.09/x
  3. Step 3: Cross multiply
    13,207.05x = 18,225.65 × 7,239.09
  4. Step 4: Simplify right side
    13,207.05x = 131,937,084.46
  5. Step 5: Solve for x
    x = 131,937,084.46/13,207.05
  6. Step 6: Final answer
    x = 9,989.90

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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.