Home / 18,870.67-28,305.70-4,830.58

Finding the Fourth Proportional to 18,870.67, 28,305.70 and 4,830.58

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Solution

The fourth proportional to 18,870.67, 28,305.70 and 4,830.58 is: 7,245.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.67 : 28,305.70 = 4,830.58 : x
  2. Step 2: Convert to fraction form
    18,870.67/28,305.70 = 4,830.58/x
  3. Step 3: Cross multiply
    18,870.67x = 28,305.70 × 4,830.58
  4. Step 4: Simplify right side
    18,870.67x = 136,732,948.31
  5. Step 5: Solve for x
    x = 136,732,948.31/18,870.67
  6. Step 6: Final answer
    x = 7,245.79

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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.