Home / 18,621.52-25,667.70-15,258.40

Finding the Fourth Proportional to 18,621.52, 25,667.70 and 15,258.40

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Solution

The fourth proportional to 18,621.52, 25,667.70 and 15,258.40 is: 21,032.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.52 : 25,667.70 = 15,258.40 : x
  2. Step 2: Convert to fraction form
    18,621.52/25,667.70 = 15,258.40/x
  3. Step 3: Cross multiply
    18,621.52x = 25,667.70 × 15,258.40
  4. Step 4: Simplify right side
    18,621.52x = 391,648,033.68
  5. Step 5: Solve for x
    x = 391,648,033.68/18,621.52
  6. Step 6: Final answer
    x = 21,032.01

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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.