Home / 14,976.02-20,667.21-8,688.80

Finding the Fourth Proportional to 14,976.02, 20,667.21 and 8,688.80

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Solution

The fourth proportional to 14,976.02, 20,667.21 and 8,688.80 is: 11,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,976.02 : 20,667.21 = 8,688.80 : x
  2. Step 2: Convert to fraction form
    14,976.02/20,667.21 = 8,688.80/x
  3. Step 3: Cross multiply
    14,976.02x = 20,667.21 × 8,688.80
  4. Step 4: Simplify right side
    14,976.02x = 179,573,254.25
  5. Step 5: Solve for x
    x = 179,573,254.25/14,976.02
  6. Step 6: Final answer
    x = 11,990.72

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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.