Home / 14,985.57-20,680.61-8,613.35

Finding the Fourth Proportional to 14,985.57, 20,680.61 and 8,613.35

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Solution

The fourth proportional to 14,985.57, 20,680.61 and 8,613.35 is: 11,886.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,985.57 : 20,680.61 = 8,613.35 : x
  2. Step 2: Convert to fraction form
    14,985.57/20,680.61 = 8,613.35/x
  3. Step 3: Cross multiply
    14,985.57x = 20,680.61 × 8,613.35
  4. Step 4: Simplify right side
    14,985.57x = 178,129,263.23
  5. Step 5: Solve for x
    x = 178,129,263.23/14,985.57
  6. Step 6: Final answer
    x = 11,886.72

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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.