Home / 18,423.39-25,428.37-11,707.70

Finding the Fourth Proportional to 18,423.39, 25,428.37 and 11,707.70

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Solution

The fourth proportional to 18,423.39, 25,428.37 and 11,707.70 is: 16,159.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423.39 : 25,428.37 = 11,707.70 : x
  2. Step 2: Convert to fraction form
    18,423.39/25,428.37 = 11,707.70/x
  3. Step 3: Cross multiply
    18,423.39x = 25,428.37 × 11,707.70
  4. Step 4: Simplify right side
    18,423.39x = 297,707,829.41
  5. Step 5: Solve for x
    x = 297,707,829.41/18,423.39
  6. Step 6: Final answer
    x = 16,159.23

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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.