Home / 20,877.26-31,129.65-18,559.04

Finding the Fourth Proportional to 20,877.26, 31,129.65 and 18,559.04

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Solution

The fourth proportional to 20,877.26, 31,129.65 and 18,559.04 is: 27,673.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.26 : 31,129.65 = 18,559.04 : x
  2. Step 2: Convert to fraction form
    20,877.26/31,129.65 = 18,559.04/x
  3. Step 3: Cross multiply
    20,877.26x = 31,129.65 × 18,559.04
  4. Step 4: Simplify right side
    20,877.26x = 577,736,263.89
  5. Step 5: Solve for x
    x = 577,736,263.89/20,877.26
  6. Step 6: Final answer
    x = 27,673.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.