Home / 42,958.32-64,439.88-13,380.36

Finding the Fourth Proportional to 42,958.32, 64,439.88 and 13,380.36

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Solution

The fourth proportional to 42,958.32, 64,439.88 and 13,380.36 is: 20,071.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,958.32 : 64,439.88 = 13,380.36 : x
  2. Step 2: Convert to fraction form
    42,958.32/64,439.88 = 13,380.36/x
  3. Step 3: Cross multiply
    42,958.32x = 64,439.88 × 13,380.36
  4. Step 4: Simplify right side
    42,958.32x = 862,228,792.76
  5. Step 5: Solve for x
    x = 862,228,792.76/42,958.32
  6. Step 6: Final answer
    x = 20,071.29

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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.