Home / 14,127.60-21,207.60-8,587.20

Finding the Fourth Proportional to 14,127.60, 21,207.60 and 8,587.20

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Solution

The fourth proportional to 14,127.60, 21,207.60 and 8,587.20 is: 12,890.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,127.60 : 21,207.60 = 8,587.20 : x
  2. Step 2: Convert to fraction form
    14,127.60/21,207.60 = 8,587.20/x
  3. Step 3: Cross multiply
    14,127.60x = 21,207.60 × 8,587.20
  4. Step 4: Simplify right side
    14,127.60x = 182,113,902.72
  5. Step 5: Solve for x
    x = 182,113,902.72/14,127.60
  6. Step 6: Final answer
    x = 12,890.65

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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.