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Finding the Fourth Proportional to 30,388.92, 45,582.98 and 15,589.82

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Solution

The fourth proportional to 30,388.92, 45,582.98 and 15,589.82 is: 23,384.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,388.92 : 45,582.98 = 15,589.82 : x
  2. Step 2: Convert to fraction form
    30,388.92/45,582.98 = 15,589.82/x
  3. Step 3: Cross multiply
    30,388.92x = 45,582.98 × 15,589.82
  4. Step 4: Simplify right side
    30,388.92x = 710,630,147.40
  5. Step 5: Solve for x
    x = 710,630,147.40/30,388.92
  6. Step 6: Final answer
    x = 23,384.51

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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.