Home / 20,657.58-28,506.98-11,582.34

Finding the Fourth Proportional to 20,657.58, 28,506.98 and 11,582.34

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Solution

The fourth proportional to 20,657.58, 28,506.98 and 11,582.34 is: 15,983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.58 : 28,506.98 = 11,582.34 : x
  2. Step 2: Convert to fraction form
    20,657.58/28,506.98 = 11,582.34/x
  3. Step 3: Cross multiply
    20,657.58x = 28,506.98 × 11,582.34
  4. Step 4: Simplify right side
    20,657.58x = 330,177,476.82
  5. Step 5: Solve for x
    x = 330,177,476.82/20,657.58
  6. Step 6: Final answer
    x = 15,983.36

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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.