Home / 18,385.23-25,369.55-10,831.07

Finding the Fourth Proportional to 18,385.23, 25,369.55 and 10,831.07

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Solution

The fourth proportional to 18,385.23, 25,369.55 and 10,831.07 is: 14,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.23 : 25,369.55 = 10,831.07 : x
  2. Step 2: Convert to fraction form
    18,385.23/25,369.55 = 10,831.07/x
  3. Step 3: Cross multiply
    18,385.23x = 25,369.55 × 10,831.07
  4. Step 4: Simplify right side
    18,385.23x = 274,779,371.92
  5. Step 5: Solve for x
    x = 274,779,371.92/18,385.23
  6. Step 6: Final answer
    x = 14,945.66

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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.