Home / 20,277.76-27,995.12-13,477.28

Finding the Fourth Proportional to 20,277.76, 27,995.12 and 13,477.28

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Solution

The fourth proportional to 20,277.76, 27,995.12 and 13,477.28 is: 18,606.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.76 : 27,995.12 = 13,477.28 : x
  2. Step 2: Convert to fraction form
    20,277.76/27,995.12 = 13,477.28/x
  3. Step 3: Cross multiply
    20,277.76x = 27,995.12 × 13,477.28
  4. Step 4: Simplify right side
    20,277.76x = 377,298,070.87
  5. Step 5: Solve for x
    x = 377,298,070.87/20,277.76
  6. Step 6: Final answer
    x = 18,606.50

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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.