Home / 13,119.84-19,664.64-5,320.08

Finding the Fourth Proportional to 13,119.84, 19,664.64 and 5,320.08

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Solution

The fourth proportional to 13,119.84, 19,664.64 and 5,320.08 is: 7,973.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.84 : 19,664.64 = 5,320.08 : x
  2. Step 2: Convert to fraction form
    13,119.84/19,664.64 = 5,320.08/x
  3. Step 3: Cross multiply
    13,119.84x = 19,664.64 × 5,320.08
  4. Step 4: Simplify right side
    13,119.84x = 104,617,457.97
  5. Step 5: Solve for x
    x = 104,617,457.97/13,119.84
  6. Step 6: Final answer
    x = 7,973.99

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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.