Home / 30,448.26-42,047.28-28,791.63

Finding the Fourth Proportional to 30,448.26, 42,047.28 and 28,791.63

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Solution

The fourth proportional to 30,448.26, 42,047.28 and 28,791.63 is: 39,759.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,448.26 : 42,047.28 = 28,791.63 : x
  2. Step 2: Convert to fraction form
    30,448.26/42,047.28 = 28,791.63/x
  3. Step 3: Cross multiply
    30,448.26x = 42,047.28 × 28,791.63
  4. Step 4: Simplify right side
    30,448.26x = 1,210,609,728.27
  5. Step 5: Solve for x
    x = 1,210,609,728.27/30,448.26
  6. Step 6: Final answer
    x = 39,759.57

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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.