Home / 30,421.82-45,632.53-12,409.98

Finding the Fourth Proportional to 30,421.82, 45,632.53 and 12,409.98

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Solution

The fourth proportional to 30,421.82, 45,632.53 and 12,409.98 is: 18,614.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.82 : 45,632.53 = 12,409.98 : x
  2. Step 2: Convert to fraction form
    30,421.82/45,632.53 = 12,409.98/x
  3. Step 3: Cross multiply
    30,421.82x = 45,632.53 × 12,409.98
  4. Step 4: Simplify right side
    30,421.82x = 566,298,784.65
  5. Step 5: Solve for x
    x = 566,298,784.65/30,421.82
  6. Step 6: Final answer
    x = 18,614.89

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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.