Home / 13,668.96-20,477.64-7,807.92

Finding the Fourth Proportional to 13,668.96, 20,477.64 and 7,807.92

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Solution

The fourth proportional to 13,668.96, 20,477.64 and 7,807.92 is: 11,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.96 : 20,477.64 = 7,807.92 : x
  2. Step 2: Convert to fraction form
    13,668.96/20,477.64 = 7,807.92/x
  3. Step 3: Cross multiply
    13,668.96x = 20,477.64 × 7,807.92
  4. Step 4: Simplify right side
    13,668.96x = 159,887,774.91
  5. Step 5: Solve for x
    x = 159,887,774.91/13,668.96
  6. Step 6: Final answer
    x = 11,697.14

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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.