Home / 18,931.16-28,395.72-5,782.50

Finding the Fourth Proportional to 18,931.16, 28,395.72 and 5,782.50

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Solution

The fourth proportional to 18,931.16, 28,395.72 and 5,782.50 is: 8,673.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.16 : 28,395.72 = 5,782.50 : x
  2. Step 2: Convert to fraction form
    18,931.16/28,395.72 = 5,782.50/x
  3. Step 3: Cross multiply
    18,931.16x = 28,395.72 × 5,782.50
  4. Step 4: Simplify right side
    18,931.16x = 164,198,250.90
  5. Step 5: Solve for x
    x = 164,198,250.90/18,931.16
  6. Step 6: Final answer
    x = 8,673.44

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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.