Home / 39,435.09-54,421.72-21,531.46

Finding the Fourth Proportional to 39,435.09, 54,421.72 and 21,531.46

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Solution

The fourth proportional to 39,435.09, 54,421.72 and 21,531.46 is: 29,714.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,435.09 : 54,421.72 = 21,531.46 : x
  2. Step 2: Convert to fraction form
    39,435.09/54,421.72 = 21,531.46/x
  3. Step 3: Cross multiply
    39,435.09x = 54,421.72 × 21,531.46
  4. Step 4: Simplify right side
    39,435.09x = 1,171,778,999.47
  5. Step 5: Solve for x
    x = 1,171,778,999.47/39,435.09
  6. Step 6: Final answer
    x = 29,714.12

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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.