Home / 27,145.49-40,711.86-13,809.65

Finding the Fourth Proportional to 27,145.49, 40,711.86 and 13,809.65

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Solution

The fourth proportional to 27,145.49, 40,711.86 and 13,809.65 is: 20,711.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,145.49 : 40,711.86 = 13,809.65 : x
  2. Step 2: Convert to fraction form
    27,145.49/40,711.86 = 13,809.65/x
  3. Step 3: Cross multiply
    27,145.49x = 40,711.86 × 13,809.65
  4. Step 4: Simplify right side
    27,145.49x = 562,216,537.45
  5. Step 5: Solve for x
    x = 562,216,537.45/27,145.49
  6. Step 6: Final answer
    x = 20,711.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.