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Finding the Fourth Proportional to 18,106.60, 27,159.92 and 4,959.08

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Solution

The fourth proportional to 18,106.60, 27,159.92 and 4,959.08 is: 7,438.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,106.60 : 27,159.92 = 4,959.08 : x
  2. Step 2: Convert to fraction form
    18,106.60/27,159.92 = 4,959.08/x
  3. Step 3: Cross multiply
    18,106.60x = 27,159.92 × 4,959.08
  4. Step 4: Simplify right side
    18,106.60x = 134,688,216.07
  5. Step 5: Solve for x
    x = 134,688,216.07/18,106.60
  6. Step 6: Final answer
    x = 7,438.63

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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.