Home / 21,085.64-29,099.41-11,655.08

Finding the Fourth Proportional to 21,085.64, 29,099.41 and 11,655.08

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Solution

The fourth proportional to 21,085.64, 29,099.41 and 11,655.08 is: 16,084.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.64 : 29,099.41 = 11,655.08 : x
  2. Step 2: Convert to fraction form
    21,085.64/29,099.41 = 11,655.08/x
  3. Step 3: Cross multiply
    21,085.64x = 29,099.41 × 11,655.08
  4. Step 4: Simplify right side
    21,085.64x = 339,155,776.87
  5. Step 5: Solve for x
    x = 339,155,776.87/21,085.64
  6. Step 6: Final answer
    x = 16,084.68

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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.