Home / 21,127.14-29,158.38-11,930.63

Finding the Fourth Proportional to 21,127.14, 29,158.38 and 11,930.63

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Solution

The fourth proportional to 21,127.14, 29,158.38 and 11,930.63 is: 16,465.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.14 : 29,158.38 = 11,930.63 : x
  2. Step 2: Convert to fraction form
    21,127.14/29,158.38 = 11,930.63/x
  3. Step 3: Cross multiply
    21,127.14x = 29,158.38 × 11,930.63
  4. Step 4: Simplify right side
    21,127.14x = 347,877,697.39
  5. Step 5: Solve for x
    x = 347,877,697.39/21,127.14
  6. Step 6: Final answer
    x = 16,465.92

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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.