Home / 28,930.29-43,420.10-11,412.42

Finding the Fourth Proportional to 28,930.29, 43,420.10 and 11,412.42

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Solution

The fourth proportional to 28,930.29, 43,420.10 and 11,412.42 is: 17,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,930.29 : 43,420.10 = 11,412.42 : x
  2. Step 2: Convert to fraction form
    28,930.29/43,420.10 = 11,412.42/x
  3. Step 3: Cross multiply
    28,930.29x = 43,420.10 × 11,412.42
  4. Step 4: Simplify right side
    28,930.29x = 495,528,360.58
  5. Step 5: Solve for x
    x = 495,528,360.58/28,930.29
  6. Step 6: Final answer
    x = 17,128.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.