Home / 20,700.56-28,565.16-11,746

Finding the Fourth Proportional to 20,700.56, 28,565.16 and 11,746

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Solution

The fourth proportional to 20,700.56, 28,565.16 and 11,746 is: 16,208.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.56 : 28,565.16 = 11,746 : x
  2. Step 2: Convert to fraction form
    20,700.56/28,565.16 = 11,746/x
  3. Step 3: Cross multiply
    20,700.56x = 28,565.16 × 11,746
  4. Step 4: Simplify right side
    20,700.56x = 335,526,369.36
  5. Step 5: Solve for x
    x = 335,526,369.36/20,700.56
  6. Step 6: Final answer
    x = 16,208.56

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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.