Home / 14,007.80-19,329.62-7,720.17

Finding the Fourth Proportional to 14,007.80, 19,329.62 and 7,720.17

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Solution

The fourth proportional to 14,007.80, 19,329.62 and 7,720.17 is: 10,653.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.80 : 19,329.62 = 7,720.17 : x
  2. Step 2: Convert to fraction form
    14,007.80/19,329.62 = 7,720.17/x
  3. Step 3: Cross multiply
    14,007.80x = 19,329.62 × 7,720.17
  4. Step 4: Simplify right side
    14,007.80x = 149,227,913.83
  5. Step 5: Solve for x
    x = 149,227,913.83/14,007.80
  6. Step 6: Final answer
    x = 10,653.21

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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.