Home / 30,019.72-45,005.20-12,502.64

Finding the Fourth Proportional to 30,019.72, 45,005.20 and 12,502.64

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Solution

The fourth proportional to 30,019.72, 45,005.20 and 12,502.64 is: 18,743.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,019.72 : 45,005.20 = 12,502.64 : x
  2. Step 2: Convert to fraction form
    30,019.72/45,005.20 = 12,502.64/x
  3. Step 3: Cross multiply
    30,019.72x = 45,005.20 × 12,502.64
  4. Step 4: Simplify right side
    30,019.72x = 562,683,813.73
  5. Step 5: Solve for x
    x = 562,683,813.73/30,019.72
  6. Step 6: Final answer
    x = 18,743.81

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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.