Home / 19,739.88-27,240.10-10,787.08

Finding the Fourth Proportional to 19,739.88, 27,240.10 and 10,787.08

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Solution

The fourth proportional to 19,739.88, 27,240.10 and 10,787.08 is: 14,885.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,739.88 : 27,240.10 = 10,787.08 : x
  2. Step 2: Convert to fraction form
    19,739.88/27,240.10 = 10,787.08/x
  3. Step 3: Cross multiply
    19,739.88x = 27,240.10 × 10,787.08
  4. Step 4: Simplify right side
    19,739.88x = 293,841,137.91
  5. Step 5: Solve for x
    x = 293,841,137.91/19,739.88
  6. Step 6: Final answer
    x = 14,885.66

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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.