Home / 13,716.70-18,929.12-7,429.08

Finding the Fourth Proportional to 13,716.70, 18,929.12 and 7,429.08

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Solution

The fourth proportional to 13,716.70, 18,929.12 and 7,429.08 is: 10,252.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716.70 : 18,929.12 = 7,429.08 : x
  2. Step 2: Convert to fraction form
    13,716.70/18,929.12 = 7,429.08/x
  3. Step 3: Cross multiply
    13,716.70x = 18,929.12 × 7,429.08
  4. Step 4: Simplify right side
    13,716.70x = 140,625,946.81
  5. Step 5: Solve for x
    x = 140,625,946.81/13,716.70
  6. Step 6: Final answer
    x = 10,252.17

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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.