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Finding the Fourth Proportional to 18,993.94, 28,492.13 and 7,307.16

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Solution

The fourth proportional to 18,993.94, 28,492.13 and 7,307.16 is: 10,961.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.94 : 28,492.13 = 7,307.16 : x
  2. Step 2: Convert to fraction form
    18,993.94/28,492.13 = 7,307.16/x
  3. Step 3: Cross multiply
    18,993.94x = 28,492.13 × 7,307.16
  4. Step 4: Simplify right side
    18,993.94x = 208,196,603.79
  5. Step 5: Solve for x
    x = 208,196,603.79/18,993.94
  6. Step 6: Final answer
    x = 10,961.21

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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.