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Finding the Fourth Proportional to 30,579.99, 45,870.03 and 8,393.64

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Solution

The fourth proportional to 30,579.99, 45,870.03 and 8,393.64 is: 12,590.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.99 : 45,870.03 = 8,393.64 : x
  2. Step 2: Convert to fraction form
    30,579.99/45,870.03 = 8,393.64/x
  3. Step 3: Cross multiply
    30,579.99x = 45,870.03 × 8,393.64
  4. Step 4: Simplify right side
    30,579.99x = 385,016,518.61
  5. Step 5: Solve for x
    x = 385,016,518.61/30,579.99
  6. Step 6: Final answer
    x = 12,590.47

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Similar ratio
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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.