Home / 18,929.12-28,393.74-6,450.53

Finding the Fourth Proportional to 18,929.12, 28,393.74 and 6,450.53

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Solution

The fourth proportional to 18,929.12, 28,393.74 and 6,450.53 is: 9,675.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.12 : 28,393.74 = 6,450.53 : x
  2. Step 2: Convert to fraction form
    18,929.12/28,393.74 = 6,450.53/x
  3. Step 3: Cross multiply
    18,929.12x = 28,393.74 × 6,450.53
  4. Step 4: Simplify right side
    18,929.12x = 183,154,529.71
  5. Step 5: Solve for x
    x = 183,154,529.71/18,929.12
  6. Step 6: Final answer
    x = 9,675.81

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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.