Home / 28,135.79-38,809.05-18,048.25

Finding the Fourth Proportional to 28,135.79, 38,809.05 and 18,048.25

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Solution

The fourth proportional to 28,135.79, 38,809.05 and 18,048.25 is: 24,894.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,135.79 : 38,809.05 = 18,048.25 : x
  2. Step 2: Convert to fraction form
    28,135.79/38,809.05 = 18,048.25/x
  3. Step 3: Cross multiply
    28,135.79x = 38,809.05 × 18,048.25
  4. Step 4: Simplify right side
    28,135.79x = 700,435,436.66
  5. Step 5: Solve for x
    x = 700,435,436.66/28,135.79
  6. Step 6: Final answer
    x = 24,894.82

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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.