Home / 13,098.75-18,076.26-7,130.45

Finding the Fourth Proportional to 13,098.75, 18,076.26 and 7,130.45

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Solution

The fourth proportional to 13,098.75, 18,076.26 and 7,130.45 is: 9,840.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,098.75 : 18,076.26 = 7,130.45 : x
  2. Step 2: Convert to fraction form
    13,098.75/18,076.26 = 7,130.45/x
  3. Step 3: Cross multiply
    13,098.75x = 18,076.26 × 7,130.45
  4. Step 4: Simplify right side
    13,098.75x = 128,891,868.12
  5. Step 5: Solve for x
    x = 128,891,868.12/13,098.75
  6. Step 6: Final answer
    x = 9,840.01

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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.