Home / 30,016.72-45,000.70-12,499.64

Finding the Fourth Proportional to 30,016.72, 45,000.70 and 12,499.64

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Solution

The fourth proportional to 30,016.72, 45,000.70 and 12,499.64 is: 18,739.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,016.72 : 45,000.70 = 12,499.64 : x
  2. Step 2: Convert to fraction form
    30,016.72/45,000.70 = 12,499.64/x
  3. Step 3: Cross multiply
    30,016.72x = 45,000.70 × 12,499.64
  4. Step 4: Simplify right side
    30,016.72x = 562,492,549.75
  5. Step 5: Solve for x
    x = 562,492,549.75/30,016.72
  6. Step 6: Final answer
    x = 18,739.31

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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.