Home / 21,384.36-29,494.37-18,964.55

Finding the Fourth Proportional to 21,384.36, 29,494.37 and 18,964.55

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Solution

The fourth proportional to 21,384.36, 29,494.37 and 18,964.55 is: 26,156.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.36 : 29,494.37 = 18,964.55 : x
  2. Step 2: Convert to fraction form
    21,384.36/29,494.37 = 18,964.55/x
  3. Step 3: Cross multiply
    21,384.36x = 29,494.37 × 18,964.55
  4. Step 4: Simplify right side
    21,384.36x = 559,347,212.29
  5. Step 5: Solve for x
    x = 559,347,212.29/21,384.36
  6. Step 6: Final answer
    x = 26,156.84

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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.