Home / 14,515.08-20,031.04-8,143.09

Finding the Fourth Proportional to 14,515.08, 20,031.04 and 8,143.09

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Solution

The fourth proportional to 14,515.08, 20,031.04 and 8,143.09 is: 11,237.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.08 : 20,031.04 = 8,143.09 : x
  2. Step 2: Convert to fraction form
    14,515.08/20,031.04 = 8,143.09/x
  3. Step 3: Cross multiply
    14,515.08x = 20,031.04 × 8,143.09
  4. Step 4: Simplify right side
    14,515.08x = 163,114,561.51
  5. Step 5: Solve for x
    x = 163,114,561.51/14,515.08
  6. Step 6: Final answer
    x = 11,237.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.