Home / 28,398.86-39,190.19-15,652.56

Finding the Fourth Proportional to 28,398.86, 39,190.19 and 15,652.56

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Solution

The fourth proportional to 28,398.86, 39,190.19 and 15,652.56 is: 21,600.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,398.86 : 39,190.19 = 15,652.56 : x
  2. Step 2: Convert to fraction form
    28,398.86/39,190.19 = 15,652.56/x
  3. Step 3: Cross multiply
    28,398.86x = 39,190.19 × 15,652.56
  4. Step 4: Simplify right side
    28,398.86x = 613,426,800.39
  5. Step 5: Solve for x
    x = 613,426,800.39/28,398.86
  6. Step 6: Final answer
    x = 21,600.40

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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.