Home / 19,872.51-27,424.67-10,920.29

Finding the Fourth Proportional to 19,872.51, 27,424.67 and 10,920.29

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Solution

The fourth proportional to 19,872.51, 27,424.67 and 10,920.29 is: 15,070.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.51 : 27,424.67 = 10,920.29 : x
  2. Step 2: Convert to fraction form
    19,872.51/27,424.67 = 10,920.29/x
  3. Step 3: Cross multiply
    19,872.51x = 27,424.67 × 10,920.29
  4. Step 4: Simplify right side
    19,872.51x = 299,485,157.83
  5. Step 5: Solve for x
    x = 299,485,157.83/19,872.51
  6. Step 6: Final answer
    x = 15,070.32

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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.