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Finding the Fourth Proportional to 12,695.80, 19,014.90 and 8,030.20

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Solution

The fourth proportional to 12,695.80, 19,014.90 and 8,030.20 is: 12,027.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,695.80 : 19,014.90 = 8,030.20 : x
  2. Step 2: Convert to fraction form
    12,695.80/19,014.90 = 8,030.20/x
  3. Step 3: Cross multiply
    12,695.80x = 19,014.90 × 8,030.20
  4. Step 4: Simplify right side
    12,695.80x = 152,693,449.98
  5. Step 5: Solve for x
    x = 152,693,449.98/12,695.80
  6. Step 6: Final answer
    x = 12,027.08

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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.