Home / 11,847.40-16,349.32-7,130.68

Finding the Fourth Proportional to 11,847.40, 16,349.32 and 7,130.68

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Solution

The fourth proportional to 11,847.40, 16,349.32 and 7,130.68 is: 9,840.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,847.40 : 16,349.32 = 7,130.68 : x
  2. Step 2: Convert to fraction form
    11,847.40/16,349.32 = 7,130.68/x
  3. Step 3: Cross multiply
    11,847.40x = 16,349.32 × 7,130.68
  4. Step 4: Simplify right side
    11,847.40x = 116,581,769.14
  5. Step 5: Solve for x
    x = 116,581,769.14/11,847.40
  6. Step 6: Final answer
    x = 9,840.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.