Home / 14,940.72-20,619.12-8,656.80

Finding the Fourth Proportional to 14,940.72, 20,619.12 and 8,656.80

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Solution

The fourth proportional to 14,940.72, 20,619.12 and 8,656.80 is: 11,946.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,940.72 : 20,619.12 = 8,656.80 : x
  2. Step 2: Convert to fraction form
    14,940.72/20,619.12 = 8,656.80/x
  3. Step 3: Cross multiply
    14,940.72x = 20,619.12 × 8,656.80
  4. Step 4: Simplify right side
    14,940.72x = 178,495,598.02
  5. Step 5: Solve for x
    x = 178,495,598.02/14,940.72
  6. Step 6: Final answer
    x = 11,946.92

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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.