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Finding the Fourth Proportional to 11,457.18, 15,794.01 and 8,936.46

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Solution

The fourth proportional to 11,457.18, 15,794.01 and 8,936.46 is: 12,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,457.18 : 15,794.01 = 8,936.46 : x
  2. Step 2: Convert to fraction form
    11,457.18/15,794.01 = 8,936.46/x
  3. Step 3: Cross multiply
    11,457.18x = 15,794.01 × 8,936.46
  4. Step 4: Simplify right side
    11,457.18x = 141,142,538.60
  5. Step 5: Solve for x
    x = 141,142,538.60/11,457.18
  6. Step 6: Final answer
    x = 12,319.13

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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.