Home / 27,217.95-40,831.70-12,428.36

Finding the Fourth Proportional to 27,217.95, 40,831.70 and 12,428.36

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Solution

The fourth proportional to 27,217.95, 40,831.70 and 12,428.36 is: 18,644.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,217.95 : 40,831.70 = 12,428.36 : x
  2. Step 2: Convert to fraction form
    27,217.95/40,831.70 = 12,428.36/x
  3. Step 3: Cross multiply
    27,217.95x = 40,831.70 × 12,428.36
  4. Step 4: Simplify right side
    27,217.95x = 507,471,200.16
  5. Step 5: Solve for x
    x = 507,471,200.16/27,217.95
  6. Step 6: Final answer
    x = 18,644.73

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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.