Home / 13,218.76-18,242.40-7,250.64

Finding the Fourth Proportional to 13,218.76, 18,242.40 and 7,250.64

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Solution

The fourth proportional to 13,218.76, 18,242.40 and 7,250.64 is: 10,006.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.76 : 18,242.40 = 7,250.64 : x
  2. Step 2: Convert to fraction form
    13,218.76/18,242.40 = 7,250.64/x
  3. Step 3: Cross multiply
    13,218.76x = 18,242.40 × 7,250.64
  4. Step 4: Simplify right side
    13,218.76x = 132,269,075.14
  5. Step 5: Solve for x
    x = 132,269,075.14/13,218.76
  6. Step 6: Final answer
    x = 10,006.16

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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.