Home / 28,516.08-42,750.12-12,929.52

Finding the Fourth Proportional to 28,516.08, 42,750.12 and 12,929.52

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Solution

The fourth proportional to 28,516.08, 42,750.12 and 12,929.52 is: 19,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.08 : 42,750.12 = 12,929.52 : x
  2. Step 2: Convert to fraction form
    28,516.08/42,750.12 = 12,929.52/x
  3. Step 3: Cross multiply
    28,516.08x = 42,750.12 × 12,929.52
  4. Step 4: Simplify right side
    28,516.08x = 552,738,531.54
  5. Step 5: Solve for x
    x = 552,738,531.54/28,516.08
  6. Step 6: Final answer
    x = 19,383.40

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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.