Home / 15,516.17-21,412.37-8,442.59

Finding the Fourth Proportional to 15,516.17, 21,412.37 and 8,442.59

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Solution

The fourth proportional to 15,516.17, 21,412.37 and 8,442.59 is: 11,650.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.17 : 21,412.37 = 8,442.59 : x
  2. Step 2: Convert to fraction form
    15,516.17/21,412.37 = 8,442.59/x
  3. Step 3: Cross multiply
    15,516.17x = 21,412.37 × 8,442.59
  4. Step 4: Simplify right side
    15,516.17x = 180,775,860.84
  5. Step 5: Solve for x
    x = 180,775,860.84/15,516.17
  6. Step 6: Final answer
    x = 11,650.80

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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.