Home / 15,709.02-21,678.44-8,996.87

Finding the Fourth Proportional to 15,709.02, 21,678.44 and 8,996.87

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Solution

The fourth proportional to 15,709.02, 21,678.44 and 8,996.87 is: 12,415.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.02 : 21,678.44 = 8,996.87 : x
  2. Step 2: Convert to fraction form
    15,709.02/21,678.44 = 8,996.87/x
  3. Step 3: Cross multiply
    15,709.02x = 21,678.44 × 8,996.87
  4. Step 4: Simplify right side
    15,709.02x = 195,037,998.09
  5. Step 5: Solve for x
    x = 195,037,998.09/15,709.02
  6. Step 6: Final answer
    x = 12,415.67

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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.