Home / 16,999.30-25,515.15-8,688.70

Finding the Fourth Proportional to 16,999.30, 25,515.15 and 8,688.70

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Solution

The fourth proportional to 16,999.30, 25,515.15 and 8,688.70 is: 13,041.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,999.30 : 25,515.15 = 8,688.70 : x
  2. Step 2: Convert to fraction form
    16,999.30/25,515.15 = 8,688.70/x
  3. Step 3: Cross multiply
    16,999.30x = 25,515.15 × 8,688.70
  4. Step 4: Simplify right side
    16,999.30x = 221,693,483.81
  5. Step 5: Solve for x
    x = 221,693,483.81/16,999.30
  6. Step 6: Final answer
    x = 13,041.33

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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.