Home / 39,730.68-54,828.90-21,827.34

Finding the Fourth Proportional to 39,730.68, 54,828.90 and 21,827.34

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Solution

The fourth proportional to 39,730.68, 54,828.90 and 21,827.34 is: 30,122.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,730.68 : 54,828.90 = 21,827.34 : x
  2. Step 2: Convert to fraction form
    39,730.68/54,828.90 = 21,827.34/x
  3. Step 3: Cross multiply
    39,730.68x = 54,828.90 × 21,827.34
  4. Step 4: Simplify right side
    39,730.68x = 1,196,769,042.13
  5. Step 5: Solve for x
    x = 1,196,769,042.13/39,730.68
  6. Step 6: Final answer
    x = 30,122.04

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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.