Home / 11,011.40-16,492.80-9,780.20

Finding the Fourth Proportional to 11,011.40, 16,492.80 and 9,780.20

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Solution

The fourth proportional to 11,011.40, 16,492.80 and 9,780.20 is: 14,648.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,011.40 : 16,492.80 = 9,780.20 : x
  2. Step 2: Convert to fraction form
    11,011.40/16,492.80 = 9,780.20/x
  3. Step 3: Cross multiply
    11,011.40x = 16,492.80 × 9,780.20
  4. Step 4: Simplify right side
    11,011.40x = 161,302,882.56
  5. Step 5: Solve for x
    x = 161,302,882.56/11,011.40
  6. Step 6: Final answer
    x = 14,648.72

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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.