Home / 21,416.84-29,555.30-11,984.68

Finding the Fourth Proportional to 21,416.84, 29,555.30 and 11,984.68

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Solution

The fourth proportional to 21,416.84, 29,555.30 and 11,984.68 is: 16,538.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.84 : 29,555.30 = 11,984.68 : x
  2. Step 2: Convert to fraction form
    21,416.84/29,555.30 = 11,984.68/x
  3. Step 3: Cross multiply
    21,416.84x = 29,555.30 × 11,984.68
  4. Step 4: Simplify right side
    21,416.84x = 354,210,812.80
  5. Step 5: Solve for x
    x = 354,210,812.80/21,416.84
  6. Step 6: Final answer
    x = 16,538.89

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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.