Home / 13,787.94-19,026.96-7,820.16

Finding the Fourth Proportional to 13,787.94, 19,026.96 and 7,820.16

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Solution

The fourth proportional to 13,787.94, 19,026.96 and 7,820.16 is: 10,791.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.94 : 19,026.96 = 7,820.16 : x
  2. Step 2: Convert to fraction form
    13,787.94/19,026.96 = 7,820.16/x
  3. Step 3: Cross multiply
    13,787.94x = 19,026.96 × 7,820.16
  4. Step 4: Simplify right side
    13,787.94x = 148,793,871.51
  5. Step 5: Solve for x
    x = 148,793,871.51/13,787.94
  6. Step 6: Final answer
    x = 10,791.60

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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.