Home / 14,007.90-19,330.20-7,720.14

Finding the Fourth Proportional to 14,007.90, 19,330.20 and 7,720.14

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Solution

The fourth proportional to 14,007.90, 19,330.20 and 7,720.14 is: 10,653.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.90 : 19,330.20 = 7,720.14 : x
  2. Step 2: Convert to fraction form
    14,007.90/19,330.20 = 7,720.14/x
  3. Step 3: Cross multiply
    14,007.90x = 19,330.20 × 7,720.14
  4. Step 4: Simplify right side
    14,007.90x = 149,231,850.23
  5. Step 5: Solve for x
    x = 149,231,850.23/14,007.90
  6. Step 6: Final answer
    x = 10,653.41

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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.