Home / 18,381.99-25,372.58-10,830.76

Finding the Fourth Proportional to 18,381.99, 25,372.58 and 10,830.76

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Solution

The fourth proportional to 18,381.99, 25,372.58 and 10,830.76 is: 14,949.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.99 : 25,372.58 = 10,830.76 : x
  2. Step 2: Convert to fraction form
    18,381.99/25,372.58 = 10,830.76/x
  3. Step 3: Cross multiply
    18,381.99x = 25,372.58 × 10,830.76
  4. Step 4: Simplify right side
    18,381.99x = 274,804,342.74
  5. Step 5: Solve for x
    x = 274,804,342.74/18,381.99
  6. Step 6: Final answer
    x = 14,949.65

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Half scale
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Double scale
Find fourth proportional to 18,382.99, 25,373.96 and 10,831.76
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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.