Home / 20,596.76-28,428.64-13,532.76

Finding the Fourth Proportional to 20,596.76, 28,428.64 and 13,532.76

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Solution

The fourth proportional to 20,596.76, 28,428.64 and 13,532.76 is: 18,678.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.76 : 28,428.64 = 13,532.76 : x
  2. Step 2: Convert to fraction form
    20,596.76/28,428.64 = 13,532.76/x
  3. Step 3: Cross multiply
    20,596.76x = 28,428.64 × 13,532.76
  4. Step 4: Simplify right side
    20,596.76x = 384,717,962.25
  5. Step 5: Solve for x
    x = 384,717,962.25/20,596.76
  6. Step 6: Final answer
    x = 18,678.57

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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.