Home / 27,519.28-37,980.64-15,420.58

Finding the Fourth Proportional to 27,519.28, 37,980.64 and 15,420.58

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Solution

The fourth proportional to 27,519.28, 37,980.64 and 15,420.58 is: 21,282.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,519.28 : 37,980.64 = 15,420.58 : x
  2. Step 2: Convert to fraction form
    27,519.28/37,980.64 = 15,420.58/x
  3. Step 3: Cross multiply
    27,519.28x = 37,980.64 × 15,420.58
  4. Step 4: Simplify right side
    27,519.28x = 585,683,497.57
  5. Step 5: Solve for x
    x = 585,683,497.57/27,519.28
  6. Step 6: Final answer
    x = 21,282.66

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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.