Home / 30,239.28-45,283.50-19,112.40

Finding the Fourth Proportional to 30,239.28, 45,283.50 and 19,112.40

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Solution

The fourth proportional to 30,239.28, 45,283.50 and 19,112.40 is: 28,620.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,239.28 : 45,283.50 = 19,112.40 : x
  2. Step 2: Convert to fraction form
    30,239.28/45,283.50 = 19,112.40/x
  3. Step 3: Cross multiply
    30,239.28x = 45,283.50 × 19,112.40
  4. Step 4: Simplify right side
    30,239.28x = 865,476,365.40
  5. Step 5: Solve for x
    x = 865,476,365.40/30,239.28
  6. Step 6: Final answer
    x = 28,620.93

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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.