Home / 13,870.07-20,799.57-8,030.78

Finding the Fourth Proportional to 13,870.07, 20,799.57 and 8,030.78

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Solution

The fourth proportional to 13,870.07, 20,799.57 and 8,030.78 is: 12,042.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.07 : 20,799.57 = 8,030.78 : x
  2. Step 2: Convert to fraction form
    13,870.07/20,799.57 = 8,030.78/x
  3. Step 3: Cross multiply
    13,870.07x = 20,799.57 × 8,030.78
  4. Step 4: Simplify right side
    13,870.07x = 167,036,770.76
  5. Step 5: Solve for x
    x = 167,036,770.76/13,870.07
  6. Step 6: Final answer
    x = 12,042.97

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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.