Home / 13,312.96-18,373.44-7,727.20

Finding the Fourth Proportional to 13,312.96, 18,373.44 and 7,727.20

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Solution

The fourth proportional to 13,312.96, 18,373.44 and 7,727.20 is: 10,664.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.96 : 18,373.44 = 7,727.20 : x
  2. Step 2: Convert to fraction form
    13,312.96/18,373.44 = 7,727.20/x
  3. Step 3: Cross multiply
    13,312.96x = 18,373.44 × 7,727.20
  4. Step 4: Simplify right side
    13,312.96x = 141,975,245.57
  5. Step 5: Solve for x
    x = 141,975,245.57/13,312.96
  6. Step 6: Final answer
    x = 10,664.44

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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.