Home / 28,475.25-42,628.77-21,030.27

Finding the Fourth Proportional to 28,475.25, 42,628.77 and 21,030.27

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Solution

The fourth proportional to 28,475.25, 42,628.77 and 21,030.27 is: 31,483.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.25 : 42,628.77 = 21,030.27 : x
  2. Step 2: Convert to fraction form
    28,475.25/42,628.77 = 21,030.27/x
  3. Step 3: Cross multiply
    28,475.25x = 42,628.77 × 21,030.27
  4. Step 4: Simplify right side
    28,475.25x = 896,494,542.87
  5. Step 5: Solve for x
    x = 896,494,542.87/28,475.25
  6. Step 6: Final answer
    x = 31,483.29

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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.