Home / 13,373.44-18,457.92-7,785.28

Finding the Fourth Proportional to 13,373.44, 18,457.92 and 7,785.28

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Solution

The fourth proportional to 13,373.44, 18,457.92 and 7,785.28 is: 10,745.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373.44 : 18,457.92 = 7,785.28 : x
  2. Step 2: Convert to fraction form
    13,373.44/18,457.92 = 7,785.28/x
  3. Step 3: Cross multiply
    13,373.44x = 18,457.92 × 7,785.28
  4. Step 4: Simplify right side
    13,373.44x = 143,700,075.42
  5. Step 5: Solve for x
    x = 143,700,075.42/13,373.44
  6. Step 6: Final answer
    x = 10,745.18

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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.