Home / 20,528.58-28,329.57-11,097.12

Finding the Fourth Proportional to 20,528.58, 28,329.57 and 11,097.12

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Solution

The fourth proportional to 20,528.58, 28,329.57 and 11,097.12 is: 15,314.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.58 : 28,329.57 = 11,097.12 : x
  2. Step 2: Convert to fraction form
    20,528.58/28,329.57 = 11,097.12/x
  3. Step 3: Cross multiply
    20,528.58x = 28,329.57 × 11,097.12
  4. Step 4: Simplify right side
    20,528.58x = 314,376,637.84
  5. Step 5: Solve for x
    x = 314,376,637.84/20,528.58
  6. Step 6: Final answer
    x = 15,314.10

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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.