Home / 19,871.36-27,417.12-12,795.20

Finding the Fourth Proportional to 19,871.36, 27,417.12 and 12,795.20

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Solution

The fourth proportional to 19,871.36, 27,417.12 and 12,795.20 is: 17,653.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.36 : 27,417.12 = 12,795.20 : x
  2. Step 2: Convert to fraction form
    19,871.36/27,417.12 = 12,795.20/x
  3. Step 3: Cross multiply
    19,871.36x = 27,417.12 × 12,795.20
  4. Step 4: Simplify right side
    19,871.36x = 350,807,533.82
  5. Step 5: Solve for x
    x = 350,807,533.82/19,871.36
  6. Step 6: Final answer
    x = 17,653.93

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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.