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Finding the Fourth Proportional to 19,992.90, 30,000.15 and 8,307.30

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Solution

The fourth proportional to 19,992.90, 30,000.15 and 8,307.30 is: 12,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.90 : 30,000.15 = 8,307.30 : x
  2. Step 2: Convert to fraction form
    19,992.90/30,000.15 = 8,307.30/x
  3. Step 3: Cross multiply
    19,992.90x = 30,000.15 × 8,307.30
  4. Step 4: Simplify right side
    19,992.90x = 249,220,246.10
  5. Step 5: Solve for x
    x = 249,220,246.10/19,992.90
  6. Step 6: Final answer
    x = 12,465.44

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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.