Home / 28,259.60-38,998.72-15,513.96

Finding the Fourth Proportional to 28,259.60, 38,998.72 and 15,513.96

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Solution

The fourth proportional to 28,259.60, 38,998.72 and 15,513.96 is: 21,409.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,259.60 : 38,998.72 = 15,513.96 : x
  2. Step 2: Convert to fraction form
    28,259.60/38,998.72 = 15,513.96/x
  3. Step 3: Cross multiply
    28,259.60x = 38,998.72 × 15,513.96
  4. Step 4: Simplify right side
    28,259.60x = 605,024,582.13
  5. Step 5: Solve for x
    x = 605,024,582.13/28,259.60
  6. Step 6: Final answer
    x = 21,409.52

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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.