Home / 13,823.20-20,718.60-10,356.40

Finding the Fourth Proportional to 13,823.20, 20,718.60 and 10,356.40

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Solution

The fourth proportional to 13,823.20, 20,718.60 and 10,356.40 is: 15,522.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.20 : 20,718.60 = 10,356.40 : x
  2. Step 2: Convert to fraction form
    13,823.20/20,718.60 = 10,356.40/x
  3. Step 3: Cross multiply
    13,823.20x = 20,718.60 × 10,356.40
  4. Step 4: Simplify right side
    13,823.20x = 214,570,109.04
  5. Step 5: Solve for x
    x = 214,570,109.04/13,823.20
  6. Step 6: Final answer
    x = 15,522.46

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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.