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Finding the Fourth Proportional to 30,368.85, 41,928.53 and 19,053.87

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Solution

The fourth proportional to 30,368.85, 41,928.53 and 19,053.87 is: 26,306.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,368.85 : 41,928.53 = 19,053.87 : x
  2. Step 2: Convert to fraction form
    30,368.85/41,928.53 = 19,053.87/x
  3. Step 3: Cross multiply
    30,368.85x = 41,928.53 × 19,053.87
  4. Step 4: Simplify right side
    30,368.85x = 798,900,664.64
  5. Step 5: Solve for x
    x = 798,900,664.64/30,368.85
  6. Step 6: Final answer
    x = 26,306.58

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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.