Home / 13,480.07-18,603.47-7,816.28

Finding the Fourth Proportional to 13,480.07, 18,603.47 and 7,816.28

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Solution

The fourth proportional to 13,480.07, 18,603.47 and 7,816.28 is: 10,787.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.07 : 18,603.47 = 7,816.28 : x
  2. Step 2: Convert to fraction form
    13,480.07/18,603.47 = 7,816.28/x
  3. Step 3: Cross multiply
    13,480.07x = 18,603.47 × 7,816.28
  4. Step 4: Simplify right side
    13,480.07x = 145,409,857.01
  5. Step 5: Solve for x
    x = 145,409,857.01/13,480.07
  6. Step 6: Final answer
    x = 10,787.03

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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.