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Finding the Fourth Proportional to 11,330.93, 16,931.44 and 8,647.67

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Solution

The fourth proportional to 11,330.93, 16,931.44 and 8,647.67 is: 12,921.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,330.93 : 16,931.44 = 8,647.67 : x
  2. Step 2: Convert to fraction form
    11,330.93/16,931.44 = 8,647.67/x
  3. Step 3: Cross multiply
    11,330.93x = 16,931.44 × 8,647.67
  4. Step 4: Simplify right side
    11,330.93x = 146,417,505.74
  5. Step 5: Solve for x
    x = 146,417,505.74/11,330.93
  6. Step 6: Final answer
    x = 12,921.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.