Home / 38,215.15-52,735.93-21,218.87

Finding the Fourth Proportional to 38,215.15, 52,735.93 and 21,218.87

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Solution

The fourth proportional to 38,215.15, 52,735.93 and 21,218.87 is: 29,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,215.15 : 52,735.93 = 21,218.87 : x
  2. Step 2: Convert to fraction form
    38,215.15/52,735.93 = 21,218.87/x
  3. Step 3: Cross multiply
    38,215.15x = 52,735.93 × 21,218.87
  4. Step 4: Simplify right side
    38,215.15x = 1,118,996,843.00
  5. Step 5: Solve for x
    x = 1,118,996,843.00/38,215.15
  6. Step 6: Final answer
    x = 29,281.50

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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.