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Finding the Fourth Proportional to 30,406.88, 45,590.00 and 12,632.91

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Solution

The fourth proportional to 30,406.88, 45,590.00 and 12,632.91 is: 18,940.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,406.88 : 45,590.00 = 12,632.91 : x
  2. Step 2: Convert to fraction form
    30,406.88/45,590.00 = 12,632.91/x
  3. Step 3: Cross multiply
    30,406.88x = 45,590.00 × 12,632.91
  4. Step 4: Simplify right side
    30,406.88x = 575,934,303.74
  5. Step 5: Solve for x
    x = 575,934,303.74/30,406.88
  6. Step 6: Final answer
    x = 18,940.92

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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.