Home / 18,828.78-28,243.91-5,681.15

Finding the Fourth Proportional to 18,828.78, 28,243.91 and 5,681.15

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Solution

The fourth proportional to 18,828.78, 28,243.91 and 5,681.15 is: 8,521.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.78 : 28,243.91 = 5,681.15 : x
  2. Step 2: Convert to fraction form
    18,828.78/28,243.91 = 5,681.15/x
  3. Step 3: Cross multiply
    18,828.78x = 28,243.91 × 5,681.15
  4. Step 4: Simplify right side
    18,828.78x = 160,457,931.50
  5. Step 5: Solve for x
    x = 160,457,931.50/18,828.78
  6. Step 6: Final answer
    x = 8,521.95

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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.