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Finding the Fourth Proportional to 15,209.90, 22,810.80 and 4,679.90

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Solution

The fourth proportional to 15,209.90, 22,810.80 and 4,679.90 is: 7,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.90 : 22,810.80 = 4,679.90 : x
  2. Step 2: Convert to fraction form
    15,209.90/22,810.80 = 4,679.90/x
  3. Step 3: Cross multiply
    15,209.90x = 22,810.80 × 4,679.90
  4. Step 4: Simplify right side
    15,209.90x = 106,752,262.92
  5. Step 5: Solve for x
    x = 106,752,262.92/15,209.90
  6. Step 6: Final answer
    x = 7,018.60

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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.