Home / 18,935.45-28,401.06-4,895.55

Finding the Fourth Proportional to 18,935.45, 28,401.06 and 4,895.55

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Solution

The fourth proportional to 18,935.45, 28,401.06 and 4,895.55 is: 7,342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.45 : 28,401.06 = 4,895.55 : x
  2. Step 2: Convert to fraction form
    18,935.45/28,401.06 = 4,895.55/x
  3. Step 3: Cross multiply
    18,935.45x = 28,401.06 × 4,895.55
  4. Step 4: Simplify right side
    18,935.45x = 139,038,809.28
  5. Step 5: Solve for x
    x = 139,038,809.28/18,935.45
  6. Step 6: Final answer
    x = 7,342.78

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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.