Home / 20,925.58-31,380.62-6,881.51

Finding the Fourth Proportional to 20,925.58, 31,380.62 and 6,881.51

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Solution

The fourth proportional to 20,925.58, 31,380.62 and 6,881.51 is: 10,319.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.58 : 31,380.62 = 6,881.51 : x
  2. Step 2: Convert to fraction form
    20,925.58/31,380.62 = 6,881.51/x
  3. Step 3: Cross multiply
    20,925.58x = 31,380.62 × 6,881.51
  4. Step 4: Simplify right side
    20,925.58x = 215,946,050.34
  5. Step 5: Solve for x
    x = 215,946,050.34/20,925.58
  6. Step 6: Final answer
    x = 10,319.72

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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.