Home / 20,484.91-28,252.98-13,409.97

Finding the Fourth Proportional to 20,484.91, 28,252.98 and 13,409.97

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Solution

The fourth proportional to 20,484.91, 28,252.98 and 13,409.97 is: 18,495.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.91 : 28,252.98 = 13,409.97 : x
  2. Step 2: Convert to fraction form
    20,484.91/28,252.98 = 13,409.97/x
  3. Step 3: Cross multiply
    20,484.91x = 28,252.98 × 13,409.97
  4. Step 4: Simplify right side
    20,484.91x = 378,871,614.21
  5. Step 5: Solve for x
    x = 378,871,614.21/20,484.91
  6. Step 6: Final answer
    x = 18,495.16

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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.