Home / 20,488.86-30,708.98-8,777.34

Finding the Fourth Proportional to 20,488.86, 30,708.98 and 8,777.34

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Solution

The fourth proportional to 20,488.86, 30,708.98 and 8,777.34 is: 13,155.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.86 : 30,708.98 = 8,777.34 : x
  2. Step 2: Convert to fraction form
    20,488.86/30,708.98 = 8,777.34/x
  3. Step 3: Cross multiply
    20,488.86x = 30,708.98 × 8,777.34
  4. Step 4: Simplify right side
    20,488.86x = 269,543,158.51
  5. Step 5: Solve for x
    x = 269,543,158.51/20,488.86
  6. Step 6: Final answer
    x = 13,155.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.