Home / 28,986.45-43,220.03-28,461.57

Finding the Fourth Proportional to 28,986.45, 43,220.03 and 28,461.57

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Solution

The fourth proportional to 28,986.45, 43,220.03 and 28,461.57 is: 42,437.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,986.45 : 43,220.03 = 28,461.57 : x
  2. Step 2: Convert to fraction form
    28,986.45/43,220.03 = 28,461.57/x
  3. Step 3: Cross multiply
    28,986.45x = 43,220.03 × 28,461.57
  4. Step 4: Simplify right side
    28,986.45x = 1,230,109,766.94
  5. Step 5: Solve for x
    x = 1,230,109,766.94/28,986.45
  6. Step 6: Final answer
    x = 42,437.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.