Home / 12,289.29-18,435.60-4,894.53

Finding the Fourth Proportional to 12,289.29, 18,435.60 and 4,894.53

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Solution

The fourth proportional to 12,289.29, 18,435.60 and 4,894.53 is: 7,342.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.29 : 18,435.60 = 4,894.53 : x
  2. Step 2: Convert to fraction form
    12,289.29/18,435.60 = 4,894.53/x
  3. Step 3: Cross multiply
    12,289.29x = 18,435.60 × 4,894.53
  4. Step 4: Simplify right side
    12,289.29x = 90,233,597.27
  5. Step 5: Solve for x
    x = 90,233,597.27/12,289.29
  6. Step 6: Final answer
    x = 7,342.46

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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.