Home / 13,120.83-18,106.27-7,152.37

Finding the Fourth Proportional to 13,120.83, 18,106.27 and 7,152.37

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Solution

The fourth proportional to 13,120.83, 18,106.27 and 7,152.37 is: 9,870.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.83 : 18,106.27 = 7,152.37 : x
  2. Step 2: Convert to fraction form
    13,120.83/18,106.27 = 7,152.37/x
  3. Step 3: Cross multiply
    13,120.83x = 18,106.27 × 7,152.37
  4. Step 4: Simplify right side
    13,120.83x = 129,502,742.36
  5. Step 5: Solve for x
    x = 129,502,742.36/13,120.83
  6. Step 6: Final answer
    x = 9,870.01

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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.