Home / 12,289.08-18,428.42-6,740.84

Finding the Fourth Proportional to 12,289.08, 18,428.42 and 6,740.84

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Solution

The fourth proportional to 12,289.08, 18,428.42 and 6,740.84 is: 10,108.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.08 : 18,428.42 = 6,740.84 : x
  2. Step 2: Convert to fraction form
    12,289.08/18,428.42 = 6,740.84/x
  3. Step 3: Cross multiply
    12,289.08x = 18,428.42 × 6,740.84
  4. Step 4: Simplify right side
    12,289.08x = 124,223,030.67
  5. Step 5: Solve for x
    x = 124,223,030.67/12,289.08
  6. Step 6: Final answer
    x = 10,108.41

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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.