Home / 12,318.18-18,477.65-4,821.45

Finding the Fourth Proportional to 12,318.18, 18,477.65 and 4,821.45

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Solution

The fourth proportional to 12,318.18, 18,477.65 and 4,821.45 is: 7,232.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.18 : 18,477.65 = 4,821.45 : x
  2. Step 2: Convert to fraction form
    12,318.18/18,477.65 = 4,821.45/x
  3. Step 3: Cross multiply
    12,318.18x = 18,477.65 × 4,821.45
  4. Step 4: Simplify right side
    12,318.18x = 89,089,077.65
  5. Step 5: Solve for x
    x = 89,089,077.65/12,318.18
  6. Step 6: Final answer
    x = 7,232.32

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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.