Home / 12,653.64-18,988.83-5,258.07

Finding the Fourth Proportional to 12,653.64, 18,988.83 and 5,258.07

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Solution

The fourth proportional to 12,653.64, 18,988.83 and 5,258.07 is: 7,890.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,653.64 : 18,988.83 = 5,258.07 : x
  2. Step 2: Convert to fraction form
    12,653.64/18,988.83 = 5,258.07/x
  3. Step 3: Cross multiply
    12,653.64x = 18,988.83 × 5,258.07
  4. Step 4: Simplify right side
    12,653.64x = 99,844,597.36
  5. Step 5: Solve for x
    x = 99,844,597.36/12,653.64
  6. Step 6: Final answer
    x = 7,890.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.