Home / 11,211.04-15,471.36-7,021.76

Finding the Fourth Proportional to 11,211.04, 15,471.36 and 7,021.76

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Solution

The fourth proportional to 11,211.04, 15,471.36 and 7,021.76 is: 9,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.04 : 15,471.36 = 7,021.76 : x
  2. Step 2: Convert to fraction form
    11,211.04/15,471.36 = 7,021.76/x
  3. Step 3: Cross multiply
    11,211.04x = 15,471.36 × 7,021.76
  4. Step 4: Simplify right side
    11,211.04x = 108,636,176.79
  5. Step 5: Solve for x
    x = 108,636,176.79/11,211.04
  6. Step 6: Final answer
    x = 9,690.11

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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.