Home / 20,583.40-30,875.10-11,689.60

Finding the Fourth Proportional to 20,583.40, 30,875.10 and 11,689.60

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Solution

The fourth proportional to 20,583.40, 30,875.10 and 11,689.60 is: 17,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.40 : 30,875.10 = 11,689.60 : x
  2. Step 2: Convert to fraction form
    20,583.40/30,875.10 = 11,689.60/x
  3. Step 3: Cross multiply
    20,583.40x = 30,875.10 × 11,689.60
  4. Step 4: Simplify right side
    20,583.40x = 360,917,568.96
  5. Step 5: Solve for x
    x = 360,917,568.96/20,583.40
  6. Step 6: Final answer
    x = 17,534.40

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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.