Home / 19,707.20-29,533.80-12,665.60

Finding the Fourth Proportional to 19,707.20, 29,533.80 and 12,665.60

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Solution

The fourth proportional to 19,707.20, 29,533.80 and 12,665.60 is: 18,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,707.20 : 29,533.80 = 12,665.60 : x
  2. Step 2: Convert to fraction form
    19,707.20/29,533.80 = 12,665.60/x
  3. Step 3: Cross multiply
    19,707.20x = 29,533.80 × 12,665.60
  4. Step 4: Simplify right side
    19,707.20x = 374,063,297.28
  5. Step 5: Solve for x
    x = 374,063,297.28/19,707.20
  6. Step 6: Final answer
    x = 18,981.05

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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.