Home / 20,810.01-28,718.31-12,633.70

Finding the Fourth Proportional to 20,810.01, 28,718.31 and 12,633.70

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Solution

The fourth proportional to 20,810.01, 28,718.31 and 12,633.70 is: 17,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.01 : 28,718.31 = 12,633.70 : x
  2. Step 2: Convert to fraction form
    20,810.01/28,718.31 = 12,633.70/x
  3. Step 3: Cross multiply
    20,810.01x = 28,718.31 × 12,633.70
  4. Step 4: Simplify right side
    20,810.01x = 362,818,513.05
  5. Step 5: Solve for x
    x = 362,818,513.05/20,810.01
  6. Step 6: Final answer
    x = 17,434.81

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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.