Home / 20,117.89-30,176.88-6,970.28

Finding the Fourth Proportional to 20,117.89, 30,176.88 and 6,970.28

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Solution

The fourth proportional to 20,117.89, 30,176.88 and 6,970.28 is: 10,455.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.89 : 30,176.88 = 6,970.28 : x
  2. Step 2: Convert to fraction form
    20,117.89/30,176.88 = 6,970.28/x
  3. Step 3: Cross multiply
    20,117.89x = 30,176.88 × 6,970.28
  4. Step 4: Simplify right side
    20,117.89x = 210,341,230.58
  5. Step 5: Solve for x
    x = 210,341,230.58/20,117.89
  6. Step 6: Final answer
    x = 10,455.43

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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.