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Finding the Fourth Proportional to 15,126.14, 20,870.99 and 8,837.30

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Solution

The fourth proportional to 15,126.14, 20,870.99 and 8,837.30 is: 12,193.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.14 : 20,870.99 = 8,837.30 : x
  2. Step 2: Convert to fraction form
    15,126.14/20,870.99 = 8,837.30/x
  3. Step 3: Cross multiply
    15,126.14x = 20,870.99 × 8,837.30
  4. Step 4: Simplify right side
    15,126.14x = 184,443,051.39
  5. Step 5: Solve for x
    x = 184,443,051.39/15,126.14
  6. Step 6: Final answer
    x = 12,193.67

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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.