Home / 13,386.60-20,078.28-4,622.40

Finding the Fourth Proportional to 13,386.60, 20,078.28 and 4,622.40

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Solution

The fourth proportional to 13,386.60, 20,078.28 and 4,622.40 is: 6,933.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.60 : 20,078.28 = 4,622.40 : x
  2. Step 2: Convert to fraction form
    13,386.60/20,078.28 = 4,622.40/x
  3. Step 3: Cross multiply
    13,386.60x = 20,078.28 × 4,622.40
  4. Step 4: Simplify right side
    13,386.60x = 92,809,841.47
  5. Step 5: Solve for x
    x = 92,809,841.47/13,386.60
  6. Step 6: Final answer
    x = 6,933.04

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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.