Home / 18,678.72-28,017.80-7,585.36

Finding the Fourth Proportional to 18,678.72, 28,017.80 and 7,585.36

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Solution

The fourth proportional to 18,678.72, 28,017.80 and 7,585.36 is: 11,377.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.72 : 28,017.80 = 7,585.36 : x
  2. Step 2: Convert to fraction form
    18,678.72/28,017.80 = 7,585.36/x
  3. Step 3: Cross multiply
    18,678.72x = 28,017.80 × 7,585.36
  4. Step 4: Simplify right side
    18,678.72x = 212,525,099.41
  5. Step 5: Solve for x
    x = 212,525,099.41/18,678.72
  6. Step 6: Final answer
    x = 11,377.93

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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.