Home / 15,036.12-20,749.89-8,322.21

Finding the Fourth Proportional to 15,036.12, 20,749.89 and 8,322.21

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Solution

The fourth proportional to 15,036.12, 20,749.89 and 8,322.21 is: 11,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.12 : 20,749.89 = 8,322.21 : x
  2. Step 2: Convert to fraction form
    15,036.12/20,749.89 = 8,322.21/x
  3. Step 3: Cross multiply
    15,036.12x = 20,749.89 × 8,322.21
  4. Step 4: Simplify right side
    15,036.12x = 172,684,900.45
  5. Step 5: Solve for x
    x = 172,684,900.45/15,036.12
  6. Step 6: Final answer
    x = 11,484.67

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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.