Home / 19,975.55-27,555.39-12,423.11

Finding the Fourth Proportional to 19,975.55, 27,555.39 and 12,423.11

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Solution

The fourth proportional to 19,975.55, 27,555.39 and 12,423.11 is: 17,137.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,975.55 : 27,555.39 = 12,423.11 : x
  2. Step 2: Convert to fraction form
    19,975.55/27,555.39 = 12,423.11/x
  3. Step 3: Cross multiply
    19,975.55x = 27,555.39 × 12,423.11
  4. Step 4: Simplify right side
    19,975.55x = 342,323,503.29
  5. Step 5: Solve for x
    x = 342,323,503.29/19,975.55
  6. Step 6: Final answer
    x = 17,137.13

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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.