Home / 19,740.15-27,240.24-10,787.72

Finding the Fourth Proportional to 19,740.15, 27,240.24 and 10,787.72

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Solution

The fourth proportional to 19,740.15, 27,240.24 and 10,787.72 is: 14,886.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,740.15 : 27,240.24 = 10,787.72 : x
  2. Step 2: Convert to fraction form
    19,740.15/27,240.24 = 10,787.72/x
  3. Step 3: Cross multiply
    19,740.15x = 27,240.24 × 10,787.72
  4. Step 4: Simplify right side
    19,740.15x = 293,860,081.85
  5. Step 5: Solve for x
    x = 293,860,081.85/19,740.15
  6. Step 6: Final answer
    x = 14,886.42

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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.