Home / 19,742.10-27,242.70-10,787.72

Finding the Fourth Proportional to 19,742.10, 27,242.70 and 10,787.72

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Solution

The fourth proportional to 19,742.10, 27,242.70 and 10,787.72 is: 14,886.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,742.10 : 27,242.70 = 10,787.72 : x
  2. Step 2: Convert to fraction form
    19,742.10/27,242.70 = 10,787.72/x
  3. Step 3: Cross multiply
    19,742.10x = 27,242.70 × 10,787.72
  4. Step 4: Simplify right side
    19,742.10x = 293,886,619.64
  5. Step 5: Solve for x
    x = 293,886,619.64/19,742.10
  6. Step 6: Final answer
    x = 14,886.29

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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.