Home / 20,507.99-28,301.60-12,015.74

Finding the Fourth Proportional to 20,507.99, 28,301.60 and 12,015.74

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Solution

The fourth proportional to 20,507.99, 28,301.60 and 12,015.74 is: 16,582.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.99 : 28,301.60 = 12,015.74 : x
  2. Step 2: Convert to fraction form
    20,507.99/28,301.60 = 12,015.74/x
  3. Step 3: Cross multiply
    20,507.99x = 28,301.60 × 12,015.74
  4. Step 4: Simplify right side
    20,507.99x = 340,064,767.98
  5. Step 5: Solve for x
    x = 340,064,767.98/20,507.99
  6. Step 6: Final answer
    x = 16,582.07

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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.