Home / 14,985.06-20,680.32-8,613.69

Finding the Fourth Proportional to 14,985.06, 20,680.32 and 8,613.69

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Solution

The fourth proportional to 14,985.06, 20,680.32 and 8,613.69 is: 11,887.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,985.06 : 20,680.32 = 8,613.69 : x
  2. Step 2: Convert to fraction form
    14,985.06/20,680.32 = 8,613.69/x
  3. Step 3: Cross multiply
    14,985.06x = 20,680.32 × 8,613.69
  4. Step 4: Simplify right side
    14,985.06x = 178,133,762.18
  5. Step 5: Solve for x
    x = 178,133,762.18/14,985.06
  6. Step 6: Final answer
    x = 11,887.43

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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.