Home / 28,259.21-38,999.58-15,683.96

Finding the Fourth Proportional to 28,259.21, 38,999.58 and 15,683.96

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Solution

The fourth proportional to 28,259.21, 38,999.58 and 15,683.96 is: 21,644.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,259.21 : 38,999.58 = 15,683.96 : x
  2. Step 2: Convert to fraction form
    28,259.21/38,999.58 = 15,683.96/x
  3. Step 3: Cross multiply
    28,259.21x = 38,999.58 × 15,683.96
  4. Step 4: Simplify right side
    28,259.21x = 611,667,852.74
  5. Step 5: Solve for x
    x = 611,667,852.74/28,259.21
  6. Step 6: Final answer
    x = 21,644.90

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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.