Home / 16,970.20-25,455.30-13,689.70

Finding the Fourth Proportional to 16,970.20, 25,455.30 and 13,689.70

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Solution

The fourth proportional to 16,970.20, 25,455.30 and 13,689.70 is: 20,534.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,970.20 : 25,455.30 = 13,689.70 : x
  2. Step 2: Convert to fraction form
    16,970.20/25,455.30 = 13,689.70/x
  3. Step 3: Cross multiply
    16,970.20x = 25,455.30 × 13,689.70
  4. Step 4: Simplify right side
    16,970.20x = 348,475,420.41
  5. Step 5: Solve for x
    x = 348,475,420.41/16,970.20
  6. Step 6: Final answer
    x = 20,534.55

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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.