Home / 28,581.90-39,438.30-17,964

Finding the Fourth Proportional to 28,581.90, 39,438.30 and 17,964

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Solution

The fourth proportional to 28,581.90, 39,438.30 and 17,964 is: 24,787.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,581.90 : 39,438.30 = 17,964 : x
  2. Step 2: Convert to fraction form
    28,581.90/39,438.30 = 17,964/x
  3. Step 3: Cross multiply
    28,581.90x = 39,438.30 × 17,964
  4. Step 4: Simplify right side
    28,581.90x = 708,469,621.20
  5. Step 5: Solve for x
    x = 708,469,621.20/28,581.90
  6. Step 6: Final answer
    x = 24,787.35

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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.