Home / 30,650.72-45,952.64-13,999.20

Finding the Fourth Proportional to 30,650.72, 45,952.64 and 13,999.20

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Solution

The fourth proportional to 30,650.72, 45,952.64 and 13,999.20 is: 20,988.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,650.72 : 45,952.64 = 13,999.20 : x
  2. Step 2: Convert to fraction form
    30,650.72/45,952.64 = 13,999.20/x
  3. Step 3: Cross multiply
    30,650.72x = 45,952.64 × 13,999.20
  4. Step 4: Simplify right side
    30,650.72x = 643,300,197.89
  5. Step 5: Solve for x
    x = 643,300,197.89/30,650.72
  6. Step 6: Final answer
    x = 20,988.09

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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.