Home / 30,087.60-45,172.80-15,306.48

Finding the Fourth Proportional to 30,087.60, 45,172.80 and 15,306.48

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Solution

The fourth proportional to 30,087.60, 45,172.80 and 15,306.48 is: 22,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,087.60 : 45,172.80 = 15,306.48 : x
  2. Step 2: Convert to fraction form
    30,087.60/45,172.80 = 15,306.48/x
  3. Step 3: Cross multiply
    30,087.60x = 45,172.80 × 15,306.48
  4. Step 4: Simplify right side
    30,087.60x = 691,436,559.74
  5. Step 5: Solve for x
    x = 691,436,559.74/30,087.60
  6. Step 6: Final answer
    x = 22,980.78

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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.