Home / 19,995.45-30,011.34-10,643.29

Finding the Fourth Proportional to 19,995.45, 30,011.34 and 10,643.29

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Solution

The fourth proportional to 19,995.45, 30,011.34 and 10,643.29 is: 15,974.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.45 : 30,011.34 = 10,643.29 : x
  2. Step 2: Convert to fraction form
    19,995.45/30,011.34 = 10,643.29/x
  3. Step 3: Cross multiply
    19,995.45x = 30,011.34 × 10,643.29
  4. Step 4: Simplify right side
    19,995.45x = 319,419,394.91
  5. Step 5: Solve for x
    x = 319,419,394.91/19,995.45
  6. Step 6: Final answer
    x = 15,974.60

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1.5x scale

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.