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Finding the Fourth Proportional to 13,223.13, 19,808.74 and 7,664.79

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Solution

The fourth proportional to 13,223.13, 19,808.74 and 7,664.79 is: 11,482.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,223.13 : 19,808.74 = 7,664.79 : x
  2. Step 2: Convert to fraction form
    13,223.13/19,808.74 = 7,664.79/x
  3. Step 3: Cross multiply
    13,223.13x = 19,808.74 × 7,664.79
  4. Step 4: Simplify right side
    13,223.13x = 151,829,873.01
  5. Step 5: Solve for x
    x = 151,829,873.01/13,223.13
  6. Step 6: Final answer
    x = 11,482.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.