Home / 31,102.06-42,907.54-20,328.25

Finding the Fourth Proportional to 31,102.06, 42,907.54 and 20,328.25

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Solution

The fourth proportional to 31,102.06, 42,907.54 and 20,328.25 is: 28,044.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,102.06 : 42,907.54 = 20,328.25 : x
  2. Step 2: Convert to fraction form
    31,102.06/42,907.54 = 20,328.25/x
  3. Step 3: Cross multiply
    31,102.06x = 42,907.54 × 20,328.25
  4. Step 4: Simplify right side
    31,102.06x = 872,235,200.01
  5. Step 5: Solve for x
    x = 872,235,200.01/31,102.06
  6. Step 6: Final answer
    x = 28,044.29

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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.