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Finding the Fourth Proportional to 18,303.24, 25,258.48 and 9,919.74

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Solution

The fourth proportional to 18,303.24, 25,258.48 and 9,919.74 is: 13,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.24 : 25,258.48 = 9,919.74 : x
  2. Step 2: Convert to fraction form
    18,303.24/25,258.48 = 9,919.74/x
  3. Step 3: Cross multiply
    18,303.24x = 25,258.48 × 9,919.74
  4. Step 4: Simplify right side
    18,303.24x = 250,557,554.40
  5. Step 5: Solve for x
    x = 250,557,554.40/18,303.24
  6. Step 6: Final answer
    x = 13,689.25

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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.