Home / 12,554.40-18,830.88-4,762.56

Finding the Fourth Proportional to 12,554.40, 18,830.88 and 4,762.56

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Solution

The fourth proportional to 12,554.40, 18,830.88 and 4,762.56 is: 7,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,554.40 : 18,830.88 = 4,762.56 : x
  2. Step 2: Convert to fraction form
    12,554.40/18,830.88 = 4,762.56/x
  3. Step 3: Cross multiply
    12,554.40x = 18,830.88 × 4,762.56
  4. Step 4: Simplify right side
    12,554.40x = 89,683,195.85
  5. Step 5: Solve for x
    x = 89,683,195.85/12,554.40
  6. Step 6: Final answer
    x = 7,143.57

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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.