Home / 13,417.20-20,106.60-9,308.40

Finding the Fourth Proportional to 13,417.20, 20,106.60 and 9,308.40

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Solution

The fourth proportional to 13,417.20, 20,106.60 and 9,308.40 is: 13,949.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.20 : 20,106.60 = 9,308.40 : x
  2. Step 2: Convert to fraction form
    13,417.20/20,106.60 = 9,308.40/x
  3. Step 3: Cross multiply
    13,417.20x = 20,106.60 × 9,308.40
  4. Step 4: Simplify right side
    13,417.20x = 187,160,275.44
  5. Step 5: Solve for x
    x = 187,160,275.44/13,417.20
  6. Step 6: Final answer
    x = 13,949.28

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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.