Home / 27,130.71-37,478.12-20,467.65

Finding the Fourth Proportional to 27,130.71, 37,478.12 and 20,467.65

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Solution

The fourth proportional to 27,130.71, 37,478.12 and 20,467.65 is: 28,273.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,130.71 : 37,478.12 = 20,467.65 : x
  2. Step 2: Convert to fraction form
    27,130.71/37,478.12 = 20,467.65/x
  3. Step 3: Cross multiply
    27,130.71x = 37,478.12 × 20,467.65
  4. Step 4: Simplify right side
    27,130.71x = 767,088,940.48
  5. Step 5: Solve for x
    x = 767,088,940.48/27,130.71
  6. Step 6: Final answer
    x = 28,273.82

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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.