Home / 21,339.74-29,448.81-12,387.62

Finding the Fourth Proportional to 21,339.74, 29,448.81 and 12,387.62

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Solution

The fourth proportional to 21,339.74, 29,448.81 and 12,387.62 is: 17,094.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.74 : 29,448.81 = 12,387.62 : x
  2. Step 2: Convert to fraction form
    21,339.74/29,448.81 = 12,387.62/x
  3. Step 3: Cross multiply
    21,339.74x = 29,448.81 × 12,387.62
  4. Step 4: Simplify right side
    21,339.74x = 364,800,520.49
  5. Step 5: Solve for x
    x = 364,800,520.49/21,339.74
  6. Step 6: Final answer
    x = 17,094.89

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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.