Home / 25,309.72-34,928.40-13,979.80

Finding the Fourth Proportional to 25,309.72, 34,928.40 and 13,979.80

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Solution

The fourth proportional to 25,309.72, 34,928.40 and 13,979.80 is: 19,292.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,309.72 : 34,928.40 = 13,979.80 : x
  2. Step 2: Convert to fraction form
    25,309.72/34,928.40 = 13,979.80/x
  3. Step 3: Cross multiply
    25,309.72x = 34,928.40 × 13,979.80
  4. Step 4: Simplify right side
    25,309.72x = 488,292,046.32
  5. Step 5: Solve for x
    x = 488,292,046.32/25,309.72
  6. Step 6: Final answer
    x = 19,292.67

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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.