Home / 28,478.96-42,677.20-25,988.48

Finding the Fourth Proportional to 28,478.96, 42,677.20 and 25,988.48

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Solution

The fourth proportional to 28,478.96, 42,677.20 and 25,988.48 is: 38,945.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.96 : 42,677.20 = 25,988.48 : x
  2. Step 2: Convert to fraction form
    28,478.96/42,677.20 = 25,988.48/x
  3. Step 3: Cross multiply
    28,478.96x = 42,677.20 × 25,988.48
  4. Step 4: Simplify right side
    28,478.96x = 1,109,115,558.66
  5. Step 5: Solve for x
    x = 1,109,115,558.66/28,478.96
  6. Step 6: Final answer
    x = 38,945.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.