Home / 12,655.68-18,988.44-5,258.28

Finding the Fourth Proportional to 12,655.68, 18,988.44 and 5,258.28

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Solution

The fourth proportional to 12,655.68, 18,988.44 and 5,258.28 is: 7,889.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.68 : 18,988.44 = 5,258.28 : x
  2. Step 2: Convert to fraction form
    12,655.68/18,988.44 = 5,258.28/x
  3. Step 3: Cross multiply
    12,655.68x = 18,988.44 × 5,258.28
  4. Step 4: Simplify right side
    12,655.68x = 99,846,534.28
  5. Step 5: Solve for x
    x = 99,846,534.28/12,655.68
  6. Step 6: Final answer
    x = 7,889.46

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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.