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Finding the Fourth Proportional to 15,101.34, 20,840.00 and 8,812.50

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Solution

The fourth proportional to 15,101.34, 20,840.00 and 8,812.50 is: 12,161.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.34 : 20,840.00 = 8,812.50 : x
  2. Step 2: Convert to fraction form
    15,101.34/20,840.00 = 8,812.50/x
  3. Step 3: Cross multiply
    15,101.34x = 20,840.00 × 8,812.50
  4. Step 4: Simplify right side
    15,101.34x = 183,652,455.94
  5. Step 5: Solve for x
    x = 183,652,455.94/15,101.34
  6. Step 6: Final answer
    x = 12,161.34

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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.