Home / 11,320.77-15,621-6,285.03

Finding the Fourth Proportional to 11,320.77, 15,621 and 6,285.03

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Solution

The fourth proportional to 11,320.77, 15,621 and 6,285.03 is: 8,672.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.77 : 15,621 = 6,285.03 : x
  2. Step 2: Convert to fraction form
    11,320.77/15,621 = 6,285.03/x
  3. Step 3: Cross multiply
    11,320.77x = 15,621 × 6,285.03
  4. Step 4: Simplify right side
    11,320.77x = 98,178,453.63
  5. Step 5: Solve for x
    x = 98,178,453.63/11,320.77
  6. Step 6: Final answer
    x = 8,672.42

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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.