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Finding the Fourth Proportional to 15,033.60, 20,746.44 and 8,746.20

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Solution

The fourth proportional to 15,033.60, 20,746.44 and 8,746.20 is: 12,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,033.60 : 20,746.44 = 8,746.20 : x
  2. Step 2: Convert to fraction form
    15,033.60/20,746.44 = 8,746.20/x
  3. Step 3: Cross multiply
    15,033.60x = 20,746.44 × 8,746.20
  4. Step 4: Simplify right side
    15,033.60x = 181,452,513.53
  5. Step 5: Solve for x
    x = 181,452,513.53/15,033.60
  6. Step 6: Final answer
    x = 12,069.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.