Home / 28,570.07-42,815.70-21,542.36

Finding the Fourth Proportional to 28,570.07, 42,815.70 and 21,542.36

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Solution

The fourth proportional to 28,570.07, 42,815.70 and 21,542.36 is: 32,283.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.07 : 42,815.70 = 21,542.36 : x
  2. Step 2: Convert to fraction form
    28,570.07/42,815.70 = 21,542.36/x
  3. Step 3: Cross multiply
    28,570.07x = 42,815.70 × 21,542.36
  4. Step 4: Simplify right side
    28,570.07x = 922,351,173.89
  5. Step 5: Solve for x
    x = 922,351,173.89/28,570.07
  6. Step 6: Final answer
    x = 32,283.82

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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.