Home / 10,145.40-15,218.10-9,756.60

Finding the Fourth Proportional to 10,145.40, 15,218.10 and 9,756.60

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Solution

The fourth proportional to 10,145.40, 15,218.10 and 9,756.60 is: 14,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.40 : 15,218.10 = 9,756.60 : x
  2. Step 2: Convert to fraction form
    10,145.40/15,218.10 = 9,756.60/x
  3. Step 3: Cross multiply
    10,145.40x = 15,218.10 × 9,756.60
  4. Step 4: Simplify right side
    10,145.40x = 148,476,914.46
  5. Step 5: Solve for x
    x = 148,476,914.46/10,145.40
  6. Step 6: Final answer
    x = 14,634.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.