Home / 11,656.02-16,085.64-6,620.40

Finding the Fourth Proportional to 11,656.02, 16,085.64 and 6,620.40

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Solution

The fourth proportional to 11,656.02, 16,085.64 and 6,620.40 is: 9,136.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,656.02 : 16,085.64 = 6,620.40 : x
  2. Step 2: Convert to fraction form
    11,656.02/16,085.64 = 6,620.40/x
  3. Step 3: Cross multiply
    11,656.02x = 16,085.64 × 6,620.40
  4. Step 4: Simplify right side
    11,656.02x = 106,493,371.06
  5. Step 5: Solve for x
    x = 106,493,371.06/11,656.02
  6. Step 6: Final answer
    x = 9,136.34

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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.