Home / 26,928.80-40,417.20-15,821.60

Finding the Fourth Proportional to 26,928.80, 40,417.20 and 15,821.60

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Solution

The fourth proportional to 26,928.80, 40,417.20 and 15,821.60 is: 23,746.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,928.80 : 40,417.20 = 15,821.60 : x
  2. Step 2: Convert to fraction form
    26,928.80/40,417.20 = 15,821.60/x
  3. Step 3: Cross multiply
    26,928.80x = 40,417.20 × 15,821.60
  4. Step 4: Simplify right side
    26,928.80x = 639,464,771.52
  5. Step 5: Solve for x
    x = 639,464,771.52/26,928.80
  6. Step 6: Final answer
    x = 23,746.50

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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.