Home / 19,872.33-27,423.95-10,920.57

Finding the Fourth Proportional to 19,872.33, 27,423.95 and 10,920.57

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Solution

The fourth proportional to 19,872.33, 27,423.95 and 10,920.57 is: 15,070.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.33 : 27,423.95 = 10,920.57 : x
  2. Step 2: Convert to fraction form
    19,872.33/27,423.95 = 10,920.57/x
  3. Step 3: Cross multiply
    19,872.33x = 27,423.95 × 10,920.57
  4. Step 4: Simplify right side
    19,872.33x = 299,485,111.05
  5. Step 5: Solve for x
    x = 299,485,111.05/19,872.33
  6. Step 6: Final answer
    x = 15,070.46

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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.