Home / 20,477.07-30,715.59-6,438.34

Finding the Fourth Proportional to 20,477.07, 30,715.59 and 6,438.34

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Solution

The fourth proportional to 20,477.07, 30,715.59 and 6,438.34 is: 9,657.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.07 : 30,715.59 = 6,438.34 : x
  2. Step 2: Convert to fraction form
    20,477.07/30,715.59 = 6,438.34/x
  3. Step 3: Cross multiply
    20,477.07x = 30,715.59 × 6,438.34
  4. Step 4: Simplify right side
    20,477.07x = 197,757,265.27
  5. Step 5: Solve for x
    x = 197,757,265.27/20,477.07
  6. Step 6: Final answer
    x = 9,657.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.