Home / 18,215.81-25,138.32-10,258.32

Finding the Fourth Proportional to 18,215.81, 25,138.32 and 10,258.32

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Solution

The fourth proportional to 18,215.81, 25,138.32 and 10,258.32 is: 14,156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.81 : 25,138.32 = 10,258.32 : x
  2. Step 2: Convert to fraction form
    18,215.81/25,138.32 = 10,258.32/x
  3. Step 3: Cross multiply
    18,215.81x = 25,138.32 × 10,258.32
  4. Step 4: Simplify right side
    18,215.81x = 257,877,002.48
  5. Step 5: Solve for x
    x = 257,877,002.48/18,215.81
  6. Step 6: Final answer
    x = 14,156.77

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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.