Home / 15,281.06-21,056.25-12,284.87

Finding the Fourth Proportional to 15,281.06, 21,056.25 and 12,284.87

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Solution

The fourth proportional to 15,281.06, 21,056.25 and 12,284.87 is: 16,927.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.06 : 21,056.25 = 12,284.87 : x
  2. Step 2: Convert to fraction form
    15,281.06/21,056.25 = 12,284.87/x
  3. Step 3: Cross multiply
    15,281.06x = 21,056.25 × 12,284.87
  4. Step 4: Simplify right side
    15,281.06x = 258,673,234.72
  5. Step 5: Solve for x
    x = 258,673,234.72/15,281.06
  6. Step 6: Final answer
    x = 16,927.71

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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.