Home / 23,031.95-31,784.20-12,960.54

Finding the Fourth Proportional to 23,031.95, 31,784.20 and 12,960.54

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Solution

The fourth proportional to 23,031.95, 31,784.20 and 12,960.54 is: 17,885.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,031.95 : 31,784.20 = 12,960.54 : x
  2. Step 2: Convert to fraction form
    23,031.95/31,784.20 = 12,960.54/x
  3. Step 3: Cross multiply
    23,031.95x = 31,784.20 × 12,960.54
  4. Step 4: Simplify right side
    23,031.95x = 411,940,363.07
  5. Step 5: Solve for x
    x = 411,940,363.07/23,031.95
  6. Step 6: Final answer
    x = 17,885.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.