Home / 12,715.81-17,548.85-7,051.12

Finding the Fourth Proportional to 12,715.81, 17,548.85 and 7,051.12

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Solution

The fourth proportional to 12,715.81, 17,548.85 and 7,051.12 is: 9,731.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.81 : 17,548.85 = 7,051.12 : x
  2. Step 2: Convert to fraction form
    12,715.81/17,548.85 = 7,051.12/x
  3. Step 3: Cross multiply
    12,715.81x = 17,548.85 × 7,051.12
  4. Step 4: Simplify right side
    12,715.81x = 123,738,924.21
  5. Step 5: Solve for x
    x = 123,738,924.21/12,715.81
  6. Step 6: Final answer
    x = 9,731.11

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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.