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Finding the Fourth Proportional to 22,281.70, 30,748.65 and 12,210.10

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Solution

The fourth proportional to 22,281.70, 30,748.65 and 12,210.10 is: 16,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,281.70 : 30,748.65 = 12,210.10 : x
  2. Step 2: Convert to fraction form
    22,281.70/30,748.65 = 12,210.10/x
  3. Step 3: Cross multiply
    22,281.70x = 30,748.65 × 12,210.10
  4. Step 4: Simplify right side
    22,281.70x = 375,444,091.37
  5. Step 5: Solve for x
    x = 375,444,091.37/22,281.70
  6. Step 6: Final answer
    x = 16,849.89

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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.