Home / 20,594.76-28,420.56-11,520.01

Finding the Fourth Proportional to 20,594.76, 28,420.56 and 11,520.01

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Solution

The fourth proportional to 20,594.76, 28,420.56 and 11,520.01 is: 15,897.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,594.76 : 28,420.56 = 11,520.01 : x
  2. Step 2: Convert to fraction form
    20,594.76/28,420.56 = 11,520.01/x
  3. Step 3: Cross multiply
    20,594.76x = 28,420.56 × 11,520.01
  4. Step 4: Simplify right side
    20,594.76x = 327,405,135.41
  5. Step 5: Solve for x
    x = 327,405,135.41/20,594.76
  6. Step 6: Final answer
    x = 15,897.50

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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.