Home / 13,118.34-18,103.19-7,150.01

Finding the Fourth Proportional to 13,118.34, 18,103.19 and 7,150.01

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Solution

The fourth proportional to 13,118.34, 18,103.19 and 7,150.01 is: 9,866.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.34 : 18,103.19 = 7,150.01 : x
  2. Step 2: Convert to fraction form
    13,118.34/18,103.19 = 7,150.01/x
  3. Step 3: Cross multiply
    13,118.34x = 18,103.19 × 7,150.01
  4. Step 4: Simplify right side
    13,118.34x = 129,437,890.08
  5. Step 5: Solve for x
    x = 129,437,890.08/13,118.34
  6. Step 6: Final answer
    x = 9,866.94

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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.