Home / 20,431.32-28,130.04-17,435.13

Finding the Fourth Proportional to 20,431.32, 28,130.04 and 17,435.13

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Solution

The fourth proportional to 20,431.32, 28,130.04 and 17,435.13 is: 24,004.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.32 : 28,130.04 = 17,435.13 : x
  2. Step 2: Convert to fraction form
    20,431.32/28,130.04 = 17,435.13/x
  3. Step 3: Cross multiply
    20,431.32x = 28,130.04 × 17,435.13
  4. Step 4: Simplify right side
    20,431.32x = 490,450,904.31
  5. Step 5: Solve for x
    x = 490,450,904.31/20,431.32
  6. Step 6: Final answer
    x = 24,004.86

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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.