Home / 19,658.30-27,130.70-11,700.55

Finding the Fourth Proportional to 19,658.30, 27,130.70 and 11,700.55

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Solution

The fourth proportional to 19,658.30, 27,130.70 and 11,700.55 is: 16,148.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.30 : 27,130.70 = 11,700.55 : x
  2. Step 2: Convert to fraction form
    19,658.30/27,130.70 = 11,700.55/x
  3. Step 3: Cross multiply
    19,658.30x = 27,130.70 × 11,700.55
  4. Step 4: Simplify right side
    19,658.30x = 317,444,053.38
  5. Step 5: Solve for x
    x = 317,444,053.38/19,658.30
  6. Step 6: Final answer
    x = 16,148.09

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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.