Home / 10,146.40-15,223.20-9,786.40

Finding the Fourth Proportional to 10,146.40, 15,223.20 and 9,786.40

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Solution

The fourth proportional to 10,146.40, 15,223.20 and 9,786.40 is: 14,683.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,146.40 : 15,223.20 = 9,786.40 : x
  2. Step 2: Convert to fraction form
    10,146.40/15,223.20 = 9,786.40/x
  3. Step 3: Cross multiply
    10,146.40x = 15,223.20 × 9,786.40
  4. Step 4: Simplify right side
    10,146.40x = 148,980,324.48
  5. Step 5: Solve for x
    x = 148,980,324.48/10,146.40
  6. Step 6: Final answer
    x = 14,683.07

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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.