Home / 20,647.84-28,499.64-12,152.68

Finding the Fourth Proportional to 20,647.84, 28,499.64 and 12,152.68

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Solution

The fourth proportional to 20,647.84, 28,499.64 and 12,152.68 is: 16,774.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.84 : 28,499.64 = 12,152.68 : x
  2. Step 2: Convert to fraction form
    20,647.84/28,499.64 = 12,152.68/x
  3. Step 3: Cross multiply
    20,647.84x = 28,499.64 × 12,152.68
  4. Step 4: Simplify right side
    20,647.84x = 346,346,944.27
  5. Step 5: Solve for x
    x = 346,346,944.27/20,647.84
  6. Step 6: Final answer
    x = 16,774.01

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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.