Home / 19,787.90-29,688.77-8,695.45

Finding the Fourth Proportional to 19,787.90, 29,688.77 and 8,695.45

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Solution

The fourth proportional to 19,787.90, 29,688.77 and 8,695.45 is: 13,046.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.90 : 29,688.77 = 8,695.45 : x
  2. Step 2: Convert to fraction form
    19,787.90/29,688.77 = 8,695.45/x
  3. Step 3: Cross multiply
    19,787.90x = 29,688.77 × 8,695.45
  4. Step 4: Simplify right side
    19,787.90x = 258,157,249.49
  5. Step 5: Solve for x
    x = 258,157,249.49/19,787.90
  6. Step 6: Final answer
    x = 13,046.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.