Home / 27,980.12-38,613.06-15,404.84

Finding the Fourth Proportional to 27,980.12, 38,613.06 and 15,404.84

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Solution

The fourth proportional to 27,980.12, 38,613.06 and 15,404.84 is: 21,258.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,980.12 : 38,613.06 = 15,404.84 : x
  2. Step 2: Convert to fraction form
    27,980.12/38,613.06 = 15,404.84/x
  3. Step 3: Cross multiply
    27,980.12x = 38,613.06 × 15,404.84
  4. Step 4: Simplify right side
    27,980.12x = 594,828,011.21
  5. Step 5: Solve for x
    x = 594,828,011.21/27,980.12
  6. Step 6: Final answer
    x = 21,258.95

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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.