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Finding the Fourth Proportional to 18,636.08, 27,955.63 and 5,309.04

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Solution

The fourth proportional to 18,636.08, 27,955.63 and 5,309.04 is: 7,964.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.08 : 27,955.63 = 5,309.04 : x
  2. Step 2: Convert to fraction form
    18,636.08/27,955.63 = 5,309.04/x
  3. Step 3: Cross multiply
    18,636.08x = 27,955.63 × 5,309.04
  4. Step 4: Simplify right side
    18,636.08x = 148,417,669.37
  5. Step 5: Solve for x
    x = 148,417,669.37/18,636.08
  6. Step 6: Final answer
    x = 7,964.00

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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.