Home / 18,830.52-28,223.64-7,731.72

Finding the Fourth Proportional to 18,830.52, 28,223.64 and 7,731.72

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Solution

The fourth proportional to 18,830.52, 28,223.64 and 7,731.72 is: 11,588.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.52 : 28,223.64 = 7,731.72 : x
  2. Step 2: Convert to fraction form
    18,830.52/28,223.64 = 7,731.72/x
  3. Step 3: Cross multiply
    18,830.52x = 28,223.64 × 7,731.72
  4. Step 4: Simplify right side
    18,830.52x = 218,217,281.86
  5. Step 5: Solve for x
    x = 218,217,281.86/18,830.52
  6. Step 6: Final answer
    x = 11,588.49

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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.