Home / 13,930.78-19,223.84-7,643.02

Finding the Fourth Proportional to 13,930.78, 19,223.84 and 7,643.02

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Solution

The fourth proportional to 13,930.78, 19,223.84 and 7,643.02 is: 10,547.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.78 : 19,223.84 = 7,643.02 : x
  2. Step 2: Convert to fraction form
    13,930.78/19,223.84 = 7,643.02/x
  3. Step 3: Cross multiply
    13,930.78x = 19,223.84 × 7,643.02
  4. Step 4: Simplify right side
    13,930.78x = 146,928,193.60
  5. Step 5: Solve for x
    x = 146,928,193.60/13,930.78
  6. Step 6: Final answer
    x = 10,547.02

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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.