Home / 14,307.14-21,457.43-3,919.70

Finding the Fourth Proportional to 14,307.14, 21,457.43 and 3,919.70

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Solution

The fourth proportional to 14,307.14, 21,457.43 and 3,919.70 is: 5,878.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,307.14 : 21,457.43 = 3,919.70 : x
  2. Step 2: Convert to fraction form
    14,307.14/21,457.43 = 3,919.70/x
  3. Step 3: Cross multiply
    14,307.14x = 21,457.43 × 3,919.70
  4. Step 4: Simplify right side
    14,307.14x = 84,106,688.37
  5. Step 5: Solve for x
    x = 84,106,688.37/14,307.14
  6. Step 6: Final answer
    x = 5,878.65

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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.