Home / 18,870.90-28,306.27-4,830.90

Finding the Fourth Proportional to 18,870.90, 28,306.27 and 4,830.90

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Solution

The fourth proportional to 18,870.90, 28,306.27 and 4,830.90 is: 7,246.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.90 : 28,306.27 = 4,830.90 : x
  2. Step 2: Convert to fraction form
    18,870.90/28,306.27 = 4,830.90/x
  3. Step 3: Cross multiply
    18,870.90x = 28,306.27 × 4,830.90
  4. Step 4: Simplify right side
    18,870.90x = 136,744,735.59
  5. Step 5: Solve for x
    x = 136,744,735.59/18,870.90
  6. Step 6: Final answer
    x = 7,246.33

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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.