Home / 28,259.89-38,997.88-15,513.06

Finding the Fourth Proportional to 28,259.89, 38,997.88 and 15,513.06

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Solution

The fourth proportional to 28,259.89, 38,997.88 and 15,513.06 is: 21,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,259.89 : 38,997.88 = 15,513.06 : x
  2. Step 2: Convert to fraction form
    28,259.89/38,997.88 = 15,513.06/x
  3. Step 3: Cross multiply
    28,259.89x = 38,997.88 × 15,513.06
  4. Step 4: Simplify right side
    28,259.89x = 604,976,452.31
  5. Step 5: Solve for x
    x = 604,976,452.31/28,259.89
  6. Step 6: Final answer
    x = 21,407.60

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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.