Home / 20,717.43-28,590.04-11,285.99

Finding the Fourth Proportional to 20,717.43, 28,590.04 and 11,285.99

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Solution

The fourth proportional to 20,717.43, 28,590.04 and 11,285.99 is: 15,574.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.43 : 28,590.04 = 11,285.99 : x
  2. Step 2: Convert to fraction form
    20,717.43/28,590.04 = 11,285.99/x
  3. Step 3: Cross multiply
    20,717.43x = 28,590.04 × 11,285.99
  4. Step 4: Simplify right side
    20,717.43x = 322,666,905.54
  5. Step 5: Solve for x
    x = 322,666,905.54/20,717.43
  6. Step 6: Final answer
    x = 15,574.66

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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.