Home / 13,303.55-18,360.57-7,640.08

Finding the Fourth Proportional to 13,303.55, 18,360.57 and 7,640.08

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Solution

The fourth proportional to 13,303.55, 18,360.57 and 7,640.08 is: 10,544.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,303.55 : 18,360.57 = 7,640.08 : x
  2. Step 2: Convert to fraction form
    13,303.55/18,360.57 = 7,640.08/x
  3. Step 3: Cross multiply
    13,303.55x = 18,360.57 × 7,640.08
  4. Step 4: Simplify right side
    13,303.55x = 140,276,223.65
  5. Step 5: Solve for x
    x = 140,276,223.65/13,303.55
  6. Step 6: Final answer
    x = 10,544.27

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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.