Home / 9,403.30-14,121.20-9,111.70

Finding the Fourth Proportional to 9,403.30, 14,121.20 and 9,111.70

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Solution

The fourth proportional to 9,403.30, 14,121.20 and 9,111.70 is: 13,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,403.30 : 14,121.20 = 9,111.70 : x
  2. Step 2: Convert to fraction form
    9,403.30/14,121.20 = 9,111.70/x
  3. Step 3: Cross multiply
    9,403.30x = 14,121.20 × 9,111.70
  4. Step 4: Simplify right side
    9,403.30x = 128,668,138.04
  5. Step 5: Solve for x
    x = 128,668,138.04/9,403.30
  6. Step 6: Final answer
    x = 13,683.30

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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.