Home / 20,374.94-28,104.77-13,301.21

Finding the Fourth Proportional to 20,374.94, 28,104.77 and 13,301.21

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Solution

The fourth proportional to 20,374.94, 28,104.77 and 13,301.21 is: 18,347.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.94 : 28,104.77 = 13,301.21 : x
  2. Step 2: Convert to fraction form
    20,374.94/28,104.77 = 13,301.21/x
  3. Step 3: Cross multiply
    20,374.94x = 28,104.77 × 13,301.21
  4. Step 4: Simplify right side
    20,374.94x = 373,827,551.29
  5. Step 5: Solve for x
    x = 373,827,551.29/20,374.94
  6. Step 6: Final answer
    x = 18,347.42

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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.