Home / 13,207.34-18,225.81-7,238.88

Finding the Fourth Proportional to 13,207.34, 18,225.81 and 7,238.88

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Solution

The fourth proportional to 13,207.34, 18,225.81 and 7,238.88 is: 9,989.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.34 : 18,225.81 = 7,238.88 : x
  2. Step 2: Convert to fraction form
    13,207.34/18,225.81 = 7,238.88/x
  3. Step 3: Cross multiply
    13,207.34x = 18,225.81 × 7,238.88
  4. Step 4: Simplify right side
    13,207.34x = 131,934,451.49
  5. Step 5: Solve for x
    x = 131,934,451.49/13,207.34
  6. Step 6: Final answer
    x = 9,989.48

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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.