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Finding the Fourth Proportional to 19,756.80, 27,271.92 and 13,477.68

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Solution

The fourth proportional to 19,756.80, 27,271.92 and 13,477.68 is: 18,604.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,756.80 : 27,271.92 = 13,477.68 : x
  2. Step 2: Convert to fraction form
    19,756.80/27,271.92 = 13,477.68/x
  3. Step 3: Cross multiply
    19,756.80x = 27,271.92 × 13,477.68
  4. Step 4: Simplify right side
    19,756.80x = 367,562,210.75
  5. Step 5: Solve for x
    x = 367,562,210.75/19,756.80
  6. Step 6: Final answer
    x = 18,604.34

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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.