Home / 12,548.88-17,312.60-8,013.28

Finding the Fourth Proportional to 12,548.88, 17,312.60 and 8,013.28

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Solution

The fourth proportional to 12,548.88, 17,312.60 and 8,013.28 is: 11,055.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,548.88 : 17,312.60 = 8,013.28 : x
  2. Step 2: Convert to fraction form
    12,548.88/17,312.60 = 8,013.28/x
  3. Step 3: Cross multiply
    12,548.88x = 17,312.60 × 8,013.28
  4. Step 4: Simplify right side
    12,548.88x = 138,730,711.33
  5. Step 5: Solve for x
    x = 138,730,711.33/12,548.88
  6. Step 6: Final answer
    x = 11,055.23

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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.