Home / 18,303.12-25,258.08-9,919.44

Finding the Fourth Proportional to 18,303.12, 25,258.08 and 9,919.44

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Solution

The fourth proportional to 18,303.12, 25,258.08 and 9,919.44 is: 13,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.12 : 25,258.08 = 9,919.44 : x
  2. Step 2: Convert to fraction form
    18,303.12/25,258.08 = 9,919.44/x
  3. Step 3: Cross multiply
    18,303.12x = 25,258.08 × 9,919.44
  4. Step 4: Simplify right side
    18,303.12x = 250,546,009.08
  5. Step 5: Solve for x
    x = 250,546,009.08/18,303.12
  6. Step 6: Final answer
    x = 13,688.70

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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.