Home / 19,739.89-27,239.90-10,787.47

Finding the Fourth Proportional to 19,739.89, 27,239.90 and 10,787.47

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Solution

The fourth proportional to 19,739.89, 27,239.90 and 10,787.47 is: 14,886.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,739.89 : 27,239.90 = 10,787.47 : x
  2. Step 2: Convert to fraction form
    19,739.89/27,239.90 = 10,787.47/x
  3. Step 3: Cross multiply
    19,739.89x = 27,239.90 × 10,787.47
  4. Step 4: Simplify right side
    19,739.89x = 293,849,604.05
  5. Step 5: Solve for x
    x = 293,849,604.05/19,739.89
  6. Step 6: Final answer
    x = 14,886.08

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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.