Home / 18,411.20-25,409.80-13,708.88

Finding the Fourth Proportional to 18,411.20, 25,409.80 and 13,708.88

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Solution

The fourth proportional to 18,411.20, 25,409.80 and 13,708.88 is: 18,920.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.20 : 25,409.80 = 13,708.88 : x
  2. Step 2: Convert to fraction form
    18,411.20/25,409.80 = 13,708.88/x
  3. Step 3: Cross multiply
    18,411.20x = 25,409.80 × 13,708.88
  4. Step 4: Simplify right side
    18,411.20x = 348,339,899.02
  5. Step 5: Solve for x
    x = 348,339,899.02/18,411.20
  6. Step 6: Final answer
    x = 18,920.00

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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.