Home / 20,677.06-28,507.71-15,020.02

Finding the Fourth Proportional to 20,677.06, 28,507.71 and 15,020.02

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Solution

The fourth proportional to 20,677.06, 28,507.71 and 15,020.02 is: 20,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.06 : 28,507.71 = 15,020.02 : x
  2. Step 2: Convert to fraction form
    20,677.06/28,507.71 = 15,020.02/x
  3. Step 3: Cross multiply
    20,677.06x = 28,507.71 × 15,020.02
  4. Step 4: Simplify right side
    20,677.06x = 428,186,374.35
  5. Step 5: Solve for x
    x = 428,186,374.35/20,677.06
  6. Step 6: Final answer
    x = 20,708.28

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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.