Home / 18,887.09-28,307.39-8,345.75

Finding the Fourth Proportional to 18,887.09, 28,307.39 and 8,345.75

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Solution

The fourth proportional to 18,887.09, 28,307.39 and 8,345.75 is: 12,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.09 : 28,307.39 = 8,345.75 : x
  2. Step 2: Convert to fraction form
    18,887.09/28,307.39 = 8,345.75/x
  3. Step 3: Cross multiply
    18,887.09x = 28,307.39 × 8,345.75
  4. Step 4: Simplify right side
    18,887.09x = 236,246,263.77
  5. Step 5: Solve for x
    x = 236,246,263.77/18,887.09
  6. Step 6: Final answer
    x = 12,508.35

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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.