Home / 20,653.07-28,502.96-12,697.25

Finding the Fourth Proportional to 20,653.07, 28,502.96 and 12,697.25

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Solution

The fourth proportional to 20,653.07, 28,502.96 and 12,697.25 is: 17,523.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.07 : 28,502.96 = 12,697.25 : x
  2. Step 2: Convert to fraction form
    20,653.07/28,502.96 = 12,697.25/x
  3. Step 3: Cross multiply
    20,653.07x = 28,502.96 × 12,697.25
  4. Step 4: Simplify right side
    20,653.07x = 361,909,002.86
  5. Step 5: Solve for x
    x = 361,909,002.86/20,653.07
  6. Step 6: Final answer
    x = 17,523.26

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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.