Home / 26,395.76-36,420.24-15,783.68

Finding the Fourth Proportional to 26,395.76, 36,420.24 and 15,783.68

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Solution

The fourth proportional to 26,395.76, 36,420.24 and 15,783.68 is: 21,777.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,395.76 : 36,420.24 = 15,783.68 : x
  2. Step 2: Convert to fraction form
    26,395.76/36,420.24 = 15,783.68/x
  3. Step 3: Cross multiply
    26,395.76x = 36,420.24 × 15,783.68
  4. Step 4: Simplify right side
    26,395.76x = 574,845,413.68
  5. Step 5: Solve for x
    x = 574,845,413.68/26,395.76
  6. Step 6: Final answer
    x = 21,777.95

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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.