Home / 20,677.62-28,525.96-12,715.14

Finding the Fourth Proportional to 20,677.62, 28,525.96 and 12,715.14

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Solution

The fourth proportional to 20,677.62, 28,525.96 and 12,715.14 is: 17,541.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.62 : 28,525.96 = 12,715.14 : x
  2. Step 2: Convert to fraction form
    20,677.62/28,525.96 = 12,715.14/x
  3. Step 3: Cross multiply
    20,677.62x = 28,525.96 × 12,715.14
  4. Step 4: Simplify right side
    20,677.62x = 362,711,400.62
  5. Step 5: Solve for x
    x = 362,711,400.62/20,677.62
  6. Step 6: Final answer
    x = 17,541.26

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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.