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Finding the Fourth Proportional to 18,573.02, 27,859.21 and 7,479.42

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Solution

The fourth proportional to 18,573.02, 27,859.21 and 7,479.42 is: 11,219.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.02 : 27,859.21 = 7,479.42 : x
  2. Step 2: Convert to fraction form
    18,573.02/27,859.21 = 7,479.42/x
  3. Step 3: Cross multiply
    18,573.02x = 27,859.21 × 7,479.42
  4. Step 4: Simplify right side
    18,573.02x = 208,370,802.11
  5. Step 5: Solve for x
    x = 208,370,802.11/18,573.02
  6. Step 6: Final answer
    x = 11,219.01

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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.