Home / 20,520.14-28,341.15-13,794.11

Finding the Fourth Proportional to 20,520.14, 28,341.15 and 13,794.11

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Solution

The fourth proportional to 20,520.14, 28,341.15 and 13,794.11 is: 19,051.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.14 : 28,341.15 = 13,794.11 : x
  2. Step 2: Convert to fraction form
    20,520.14/28,341.15 = 13,794.11/x
  3. Step 3: Cross multiply
    20,520.14x = 28,341.15 × 13,794.11
  4. Step 4: Simplify right side
    20,520.14x = 390,940,798.92
  5. Step 5: Solve for x
    x = 390,940,798.92/20,520.14
  6. Step 6: Final answer
    x = 19,051.57

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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.