Home / 21,338.91-29,457.65-12,384.68

Finding the Fourth Proportional to 21,338.91, 29,457.65 and 12,384.68

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Solution

The fourth proportional to 21,338.91, 29,457.65 and 12,384.68 is: 17,096.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.91 : 29,457.65 = 12,384.68 : x
  2. Step 2: Convert to fraction form
    21,338.91/29,457.65 = 12,384.68/x
  3. Step 3: Cross multiply
    21,338.91x = 29,457.65 × 12,384.68
  4. Step 4: Simplify right side
    21,338.91x = 364,823,452.48
  5. Step 5: Solve for x
    x = 364,823,452.48/21,338.91
  6. Step 6: Final answer
    x = 17,096.63

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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.