Home / 11,135.30-15,348.87-7,549.16

Finding the Fourth Proportional to 11,135.30, 15,348.87 and 7,549.16

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Solution

The fourth proportional to 11,135.30, 15,348.87 and 7,549.16 is: 10,405.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.30 : 15,348.87 = 7,549.16 : x
  2. Step 2: Convert to fraction form
    11,135.30/15,348.87 = 7,549.16/x
  3. Step 3: Cross multiply
    11,135.30x = 15,348.87 × 7,549.16
  4. Step 4: Simplify right side
    11,135.30x = 115,871,075.45
  5. Step 5: Solve for x
    x = 115,871,075.45/11,135.30
  6. Step 6: Final answer
    x = 10,405.74

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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.