Home / 19,739.64-27,239.90-10,787.45

Finding the Fourth Proportional to 19,739.64, 27,239.90 and 10,787.45

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Solution

The fourth proportional to 19,739.64, 27,239.90 and 10,787.45 is: 14,886.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,739.64 : 27,239.90 = 10,787.45 : x
  2. Step 2: Convert to fraction form
    19,739.64/27,239.90 = 10,787.45/x
  3. Step 3: Cross multiply
    19,739.64x = 27,239.90 × 10,787.45
  4. Step 4: Simplify right side
    19,739.64x = 293,848,869.12
  5. Step 5: Solve for x
    x = 293,848,869.12/19,739.64
  6. Step 6: Final answer
    x = 14,886.23

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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.