Home / 13,268.80-18,311.40-7,300.72

Finding the Fourth Proportional to 13,268.80, 18,311.40 and 7,300.72

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Solution

The fourth proportional to 13,268.80, 18,311.40 and 7,300.72 is: 10,075.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.80 : 18,311.40 = 7,300.72 : x
  2. Step 2: Convert to fraction form
    13,268.80/18,311.40 = 7,300.72/x
  3. Step 3: Cross multiply
    13,268.80x = 18,311.40 × 7,300.72
  4. Step 4: Simplify right side
    13,268.80x = 133,686,427.10
  5. Step 5: Solve for x
    x = 133,686,427.10/13,268.80
  6. Step 6: Final answer
    x = 10,075.25

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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.