Home / 20,678.11-31,031.00-7,350.58

Finding the Fourth Proportional to 20,678.11, 31,031.00 and 7,350.58

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Solution

The fourth proportional to 20,678.11, 31,031.00 and 7,350.58 is: 11,030.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.11 : 31,031.00 = 7,350.58 : x
  2. Step 2: Convert to fraction form
    20,678.11/31,031.00 = 7,350.58/x
  3. Step 3: Cross multiply
    20,678.11x = 31,031.00 × 7,350.58
  4. Step 4: Simplify right side
    20,678.11x = 228,095,656.07
  5. Step 5: Solve for x
    x = 228,095,656.07/20,678.11
  6. Step 6: Final answer
    x = 11,030.78

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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.