Home / 12,323.12-18,484.40-3,438.21

Finding the Fourth Proportional to 12,323.12, 18,484.40 and 3,438.21

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Solution

The fourth proportional to 12,323.12, 18,484.40 and 3,438.21 is: 5,157.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,323.12 : 18,484.40 = 3,438.21 : x
  2. Step 2: Convert to fraction form
    12,323.12/18,484.40 = 3,438.21/x
  3. Step 3: Cross multiply
    12,323.12x = 18,484.40 × 3,438.21
  4. Step 4: Simplify right side
    12,323.12x = 63,553,248.92
  5. Step 5: Solve for x
    x = 63,553,248.92/12,323.12
  6. Step 6: Final answer
    x = 5,157.24

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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.