Home / 21,054.80-28,996.56-20,595.54

Finding the Fourth Proportional to 21,054.80, 28,996.56 and 20,595.54

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Solution

The fourth proportional to 21,054.80, 28,996.56 and 20,595.54 is: 28,364.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.80 : 28,996.56 = 20,595.54 : x
  2. Step 2: Convert to fraction form
    21,054.80/28,996.56 = 20,595.54/x
  3. Step 3: Cross multiply
    21,054.80x = 28,996.56 × 20,595.54
  4. Step 4: Simplify right side
    21,054.80x = 597,199,811.34
  5. Step 5: Solve for x
    x = 597,199,811.34/21,054.80
  6. Step 6: Final answer
    x = 28,364.07

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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.