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Finding the Fourth Proportional to 12,477.15, 18,710.21 and 4,680.49

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Solution

The fourth proportional to 12,477.15, 18,710.21 and 4,680.49 is: 7,018.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.15 : 18,710.21 = 4,680.49 : x
  2. Step 2: Convert to fraction form
    12,477.15/18,710.21 = 4,680.49/x
  3. Step 3: Cross multiply
    12,477.15x = 18,710.21 × 4,680.49
  4. Step 4: Simplify right side
    12,477.15x = 87,572,950.80
  5. Step 5: Solve for x
    x = 87,572,950.80/12,477.15
  6. Step 6: Final answer
    x = 7,018.67

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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.