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Finding the Fourth Proportional to 11,798.40, 17,688.60 and 5,959.20

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Solution

The fourth proportional to 11,798.40, 17,688.60 and 5,959.20 is: 8,934.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,798.40 : 17,688.60 = 5,959.20 : x
  2. Step 2: Convert to fraction form
    11,798.40/17,688.60 = 5,959.20/x
  3. Step 3: Cross multiply
    11,798.40x = 17,688.60 × 5,959.20
  4. Step 4: Simplify right side
    11,798.40x = 105,409,905.12
  5. Step 5: Solve for x
    x = 105,409,905.12/11,798.40
  6. Step 6: Final answer
    x = 8,934.25

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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.