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Finding the Fourth Proportional to 13,258.64, 19,888.03 and 4,493.64

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Solution

The fourth proportional to 13,258.64, 19,888.03 and 4,493.64 is: 6,740.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.64 : 19,888.03 = 4,493.64 : x
  2. Step 2: Convert to fraction form
    13,258.64/19,888.03 = 4,493.64/x
  3. Step 3: Cross multiply
    13,258.64x = 19,888.03 × 4,493.64
  4. Step 4: Simplify right side
    13,258.64x = 89,369,647.13
  5. Step 5: Solve for x
    x = 89,369,647.13/13,258.64
  6. Step 6: Final answer
    x = 6,740.48

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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.