Home / 20,660.96-28,502.40-14,983.26

Finding the Fourth Proportional to 20,660.96, 28,502.40 and 14,983.26

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Solution

The fourth proportional to 20,660.96, 28,502.40 and 14,983.26 is: 20,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.96 : 28,502.40 = 14,983.26 : x
  2. Step 2: Convert to fraction form
    20,660.96/28,502.40 = 14,983.26/x
  3. Step 3: Cross multiply
    20,660.96x = 28,502.40 × 14,983.26
  4. Step 4: Simplify right side
    20,660.96x = 427,058,869.82
  5. Step 5: Solve for x
    x = 427,058,869.82/20,660.96
  6. Step 6: Final answer
    x = 20,669.85

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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.