Home / 30,680.47-45,991.54-19,555.93

Finding the Fourth Proportional to 30,680.47, 45,991.54 and 19,555.93

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Solution

The fourth proportional to 30,680.47, 45,991.54 and 19,555.93 is: 29,315.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,680.47 : 45,991.54 = 19,555.93 : x
  2. Step 2: Convert to fraction form
    30,680.47/45,991.54 = 19,555.93/x
  3. Step 3: Cross multiply
    30,680.47x = 45,991.54 × 19,555.93
  4. Step 4: Simplify right side
    30,680.47x = 899,407,336.83
  5. Step 5: Solve for x
    x = 899,407,336.83/30,680.47
  6. Step 6: Final answer
    x = 29,315.31

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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.