Home / 20,538.14-28,329.58-13,465.01

Finding the Fourth Proportional to 20,538.14, 28,329.58 and 13,465.01

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Solution

The fourth proportional to 20,538.14, 28,329.58 and 13,465.01 is: 18,573.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.14 : 28,329.58 = 13,465.01 : x
  2. Step 2: Convert to fraction form
    20,538.14/28,329.58 = 13,465.01/x
  3. Step 3: Cross multiply
    20,538.14x = 28,329.58 × 13,465.01
  4. Step 4: Simplify right side
    20,538.14x = 381,458,010.67
  5. Step 5: Solve for x
    x = 381,458,010.67/20,538.14
  6. Step 6: Final answer
    x = 18,573.16

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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.