Home / 28,111.20-42,166.80-26,580.30

Finding the Fourth Proportional to 28,111.20, 42,166.80 and 26,580.30

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Solution

The fourth proportional to 28,111.20, 42,166.80 and 26,580.30 is: 39,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.20 : 42,166.80 = 26,580.30 : x
  2. Step 2: Convert to fraction form
    28,111.20/42,166.80 = 26,580.30/x
  3. Step 3: Cross multiply
    28,111.20x = 42,166.80 × 26,580.30
  4. Step 4: Simplify right side
    28,111.20x = 1,120,806,194.04
  5. Step 5: Solve for x
    x = 1,120,806,194.04/28,111.20
  6. Step 6: Final answer
    x = 39,870.45

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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.