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Finding the Fourth Proportional to 14,398.79, 21,566.93 and 6,987.67

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Solution

The fourth proportional to 14,398.79, 21,566.93 and 6,987.67 is: 10,466.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,398.79 : 21,566.93 = 6,987.67 : x
  2. Step 2: Convert to fraction form
    14,398.79/21,566.93 = 6,987.67/x
  3. Step 3: Cross multiply
    14,398.79x = 21,566.93 × 6,987.67
  4. Step 4: Simplify right side
    14,398.79x = 150,702,500.90
  5. Step 5: Solve for x
    x = 150,702,500.90/14,398.79
  6. Step 6: Final answer
    x = 10,466.33

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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.