Home / 19,647.36-27,111.24-11,688.30

Finding the Fourth Proportional to 19,647.36, 27,111.24 and 11,688.30

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Solution

The fourth proportional to 19,647.36, 27,111.24 and 11,688.30 is: 16,128.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,647.36 : 27,111.24 = 11,688.30 : x
  2. Step 2: Convert to fraction form
    19,647.36/27,111.24 = 11,688.30/x
  3. Step 3: Cross multiply
    19,647.36x = 27,111.24 × 11,688.30
  4. Step 4: Simplify right side
    19,647.36x = 316,884,306.49
  5. Step 5: Solve for x
    x = 316,884,306.49/19,647.36
  6. Step 6: Final answer
    x = 16,128.59

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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.