Home / 12,715.72-17,548.58-7,127.08

Finding the Fourth Proportional to 12,715.72, 17,548.58 and 7,127.08

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Solution

The fourth proportional to 12,715.72, 17,548.58 and 7,127.08 is: 9,835.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.72 : 17,548.58 = 7,127.08 : x
  2. Step 2: Convert to fraction form
    12,715.72/17,548.58 = 7,127.08/x
  3. Step 3: Cross multiply
    12,715.72x = 17,548.58 × 7,127.08
  4. Step 4: Simplify right side
    12,715.72x = 125,070,133.55
  5. Step 5: Solve for x
    x = 125,070,133.55/12,715.72
  6. Step 6: Final answer
    x = 9,835.87

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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.