Home / 20,698.08-28,568.88-12,317.28

Finding the Fourth Proportional to 20,698.08, 28,568.88 and 12,317.28

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Solution

The fourth proportional to 20,698.08, 28,568.88 and 12,317.28 is: 17,001.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.08 : 28,568.88 = 12,317.28 : x
  2. Step 2: Convert to fraction form
    20,698.08/28,568.88 = 12,317.28/x
  3. Step 3: Cross multiply
    20,698.08x = 28,568.88 × 12,317.28
  4. Step 4: Simplify right side
    20,698.08x = 351,890,894.25
  5. Step 5: Solve for x
    x = 351,890,894.25/20,698.08
  6. Step 6: Final answer
    x = 17,001.14

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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.