Home / 19,755.81-29,645.40-7,284.60

Finding the Fourth Proportional to 19,755.81, 29,645.40 and 7,284.60

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Solution

The fourth proportional to 19,755.81, 29,645.40 and 7,284.60 is: 10,931.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,755.81 : 29,645.40 = 7,284.60 : x
  2. Step 2: Convert to fraction form
    19,755.81/29,645.40 = 7,284.60/x
  3. Step 3: Cross multiply
    19,755.81x = 29,645.40 × 7,284.60
  4. Step 4: Simplify right side
    19,755.81x = 215,954,880.84
  5. Step 5: Solve for x
    x = 215,954,880.84/19,755.81
  6. Step 6: Final answer
    x = 10,931.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.