Home / 19,871.96-27,424.04-10,920.31

Finding the Fourth Proportional to 19,871.96, 27,424.04 and 10,920.31

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Solution

The fourth proportional to 19,871.96, 27,424.04 and 10,920.31 is: 15,070.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.96 : 27,424.04 = 10,920.31 : x
  2. Step 2: Convert to fraction form
    19,871.96/27,424.04 = 10,920.31/x
  3. Step 3: Cross multiply
    19,871.96x = 27,424.04 × 10,920.31
  4. Step 4: Simplify right side
    19,871.96x = 299,478,895.09
  5. Step 5: Solve for x
    x = 299,478,895.09/19,871.96
  6. Step 6: Final answer
    x = 15,070.43

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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.