Home / 18,298.95-25,270.49-15,630.81

Finding the Fourth Proportional to 18,298.95, 25,270.49 and 15,630.81

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Solution

The fourth proportional to 18,298.95, 25,270.49 and 15,630.81 is: 21,585.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,298.95 : 25,270.49 = 15,630.81 : x
  2. Step 2: Convert to fraction form
    18,298.95/25,270.49 = 15,630.81/x
  3. Step 3: Cross multiply
    18,298.95x = 25,270.49 × 15,630.81
  4. Step 4: Simplify right side
    18,298.95x = 394,998,227.80
  5. Step 5: Solve for x
    x = 394,998,227.80/18,298.95
  6. Step 6: Final answer
    x = 21,585.84

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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.