Home / 20,654.07-28,502.73-12,156.51

Finding the Fourth Proportional to 20,654.07, 28,502.73 and 12,156.51

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Solution

The fourth proportional to 20,654.07, 28,502.73 and 12,156.51 is: 16,776.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.07 : 28,502.73 = 12,156.51 : x
  2. Step 2: Convert to fraction form
    20,654.07/28,502.73 = 12,156.51/x
  3. Step 3: Cross multiply
    20,654.07x = 28,502.73 × 12,156.51
  4. Step 4: Simplify right side
    20,654.07x = 346,493,722.27
  5. Step 5: Solve for x
    x = 346,493,722.27/20,654.07
  6. Step 6: Final answer
    x = 16,776.05

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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.