Home / 19,739.79-27,240.14-10,787.40

Finding the Fourth Proportional to 19,739.79, 27,240.14 and 10,787.40

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Solution

The fourth proportional to 19,739.79, 27,240.14 and 10,787.40 is: 14,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,739.79 : 27,240.14 = 10,787.40 : x
  2. Step 2: Convert to fraction form
    19,739.79/27,240.14 = 10,787.40/x
  3. Step 3: Cross multiply
    19,739.79x = 27,240.14 × 10,787.40
  4. Step 4: Simplify right side
    19,739.79x = 293,850,232.30
  5. Step 5: Solve for x
    x = 293,850,232.30/19,739.79
  6. Step 6: Final answer
    x = 14,886.19

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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.