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Finding the Fourth Proportional to 14,775.09, 20,385.99 and 9,031.08

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Solution

The fourth proportional to 14,775.09, 20,385.99 and 9,031.08 is: 12,460.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.09 : 20,385.99 = 9,031.08 : x
  2. Step 2: Convert to fraction form
    14,775.09/20,385.99 = 9,031.08/x
  3. Step 3: Cross multiply
    14,775.09x = 20,385.99 × 9,031.08
  4. Step 4: Simplify right side
    14,775.09x = 184,107,506.57
  5. Step 5: Solve for x
    x = 184,107,506.57/14,775.09
  6. Step 6: Final answer
    x = 12,460.67

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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.