Home / 30,290.90-41,777.76-19,683.94

Finding the Fourth Proportional to 30,290.90, 41,777.76 and 19,683.94

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Solution

The fourth proportional to 30,290.90, 41,777.76 and 19,683.94 is: 27,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,290.90 : 41,777.76 = 19,683.94 : x
  2. Step 2: Convert to fraction form
    30,290.90/41,777.76 = 19,683.94/x
  3. Step 3: Cross multiply
    30,290.90x = 41,777.76 × 19,683.94
  4. Step 4: Simplify right side
    30,290.90x = 822,350,921.17
  5. Step 5: Solve for x
    x = 822,350,921.17/30,290.90
  6. Step 6: Final answer
    x = 27,148.45

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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.