Home / 21,995.74-30,313.42-15,622.62

Finding the Fourth Proportional to 21,995.74, 30,313.42 and 15,622.62

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Solution

The fourth proportional to 21,995.74, 30,313.42 and 15,622.62 is: 21,530.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.74 : 30,313.42 = 15,622.62 : x
  2. Step 2: Convert to fraction form
    21,995.74/30,313.42 = 15,622.62/x
  3. Step 3: Cross multiply
    21,995.74x = 30,313.42 × 15,622.62
  4. Step 4: Simplify right side
    21,995.74x = 473,575,041.56
  5. Step 5: Solve for x
    x = 473,575,041.56/21,995.74
  6. Step 6: Final answer
    x = 21,530.31

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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.