Home / 29,987.40-41,394.93-20,458.74

Finding the Fourth Proportional to 29,987.40, 41,394.93 and 20,458.74

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Solution

The fourth proportional to 29,987.40, 41,394.93 and 20,458.74 is: 28,241.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,987.40 : 41,394.93 = 20,458.74 : x
  2. Step 2: Convert to fraction form
    29,987.40/41,394.93 = 20,458.74/x
  3. Step 3: Cross multiply
    29,987.40x = 41,394.93 × 20,458.74
  4. Step 4: Simplify right side
    29,987.40x = 846,887,800.92
  5. Step 5: Solve for x
    x = 846,887,800.92/29,987.40
  6. Step 6: Final answer
    x = 28,241.46

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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.