Home / 13,880.57-19,155.02-7,912.22

Finding the Fourth Proportional to 13,880.57, 19,155.02 and 7,912.22

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Solution

The fourth proportional to 13,880.57, 19,155.02 and 7,912.22 is: 10,918.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.57 : 19,155.02 = 7,912.22 : x
  2. Step 2: Convert to fraction form
    13,880.57/19,155.02 = 7,912.22/x
  3. Step 3: Cross multiply
    13,880.57x = 19,155.02 × 7,912.22
  4. Step 4: Simplify right side
    13,880.57x = 151,558,597.01
  5. Step 5: Solve for x
    x = 151,558,597.01/13,880.57
  6. Step 6: Final answer
    x = 10,918.76

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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.