Home / 13,098.87-18,076.35-7,130.49

Finding the Fourth Proportional to 13,098.87, 18,076.35 and 7,130.49

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Solution

The fourth proportional to 13,098.87, 18,076.35 and 7,130.49 is: 9,840.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,098.87 : 18,076.35 = 7,130.49 : x
  2. Step 2: Convert to fraction form
    13,098.87/18,076.35 = 7,130.49/x
  3. Step 3: Cross multiply
    13,098.87x = 18,076.35 × 7,130.49
  4. Step 4: Simplify right side
    13,098.87x = 128,893,232.91
  5. Step 5: Solve for x
    x = 128,893,232.91/13,098.87
  6. Step 6: Final answer
    x = 9,840.03

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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.