Home / 13,191.60-18,204.16-7,223.20

Finding the Fourth Proportional to 13,191.60, 18,204.16 and 7,223.20

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Solution

The fourth proportional to 13,191.60, 18,204.16 and 7,223.20 is: 9,967.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.60 : 18,204.16 = 7,223.20 : x
  2. Step 2: Convert to fraction form
    13,191.60/18,204.16 = 7,223.20/x
  3. Step 3: Cross multiply
    13,191.60x = 18,204.16 × 7,223.20
  4. Step 4: Simplify right side
    13,191.60x = 131,492,288.51
  5. Step 5: Solve for x
    x = 131,492,288.51/13,191.60
  6. Step 6: Final answer
    x = 9,967.88

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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.