Home / 14,428-21,629.04-5,191.84

Finding the Fourth Proportional to 14,428, 21,629.04 and 5,191.84

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Solution

The fourth proportional to 14,428, 21,629.04 and 5,191.84 is: 7,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428 : 21,629.04 = 5,191.84 : x
  2. Step 2: Convert to fraction form
    14,428/21,629.04 = 5,191.84/x
  3. Step 3: Cross multiply
    14,428x = 21,629.04 × 5,191.84
  4. Step 4: Simplify right side
    14,428x = 112,294,515.03
  5. Step 5: Solve for x
    x = 112,294,515.03/14,428
  6. Step 6: Final answer
    x = 7,783.10

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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.