Home / 42,787.36-64,181.92-13,205.22

Finding the Fourth Proportional to 42,787.36, 64,181.92 and 13,205.22

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Solution

The fourth proportional to 42,787.36, 64,181.92 and 13,205.22 is: 19,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,787.36 : 64,181.92 = 13,205.22 : x
  2. Step 2: Convert to fraction form
    42,787.36/64,181.92 = 13,205.22/x
  3. Step 3: Cross multiply
    42,787.36x = 64,181.92 × 13,205.22
  4. Step 4: Simplify right side
    42,787.36x = 847,536,373.62
  5. Step 5: Solve for x
    x = 847,536,373.62/42,787.36
  6. Step 6: Final answer
    x = 19,808.10

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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.