Home / 9,911.90-14,869.20-3,670.40

Finding the Fourth Proportional to 9,911.90, 14,869.20 and 3,670.40

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Solution

The fourth proportional to 9,911.90, 14,869.20 and 3,670.40 is: 5,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.90 : 14,869.20 = 3,670.40 : x
  2. Step 2: Convert to fraction form
    9,911.90/14,869.20 = 3,670.40/x
  3. Step 3: Cross multiply
    9,911.90x = 14,869.20 × 3,670.40
  4. Step 4: Simplify right side
    9,911.90x = 54,575,911.68
  5. Step 5: Solve for x
    x = 54,575,911.68/9,911.90
  6. Step 6: Final answer
    x = 5,506.10

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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.