Home / 15,884.26-21,918.70-9,172.05

Finding the Fourth Proportional to 15,884.26, 21,918.70 and 9,172.05

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Solution

The fourth proportional to 15,884.26, 21,918.70 and 9,172.05 is: 12,656.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,884.26 : 21,918.70 = 9,172.05 : x
  2. Step 2: Convert to fraction form
    15,884.26/21,918.70 = 9,172.05/x
  3. Step 3: Cross multiply
    15,884.26x = 21,918.70 × 9,172.05
  4. Step 4: Simplify right side
    15,884.26x = 201,039,412.34
  5. Step 5: Solve for x
    x = 201,039,412.34/15,884.26
  6. Step 6: Final answer
    x = 12,656.52

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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.