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Finding the Fourth Proportional to 15,679.70, 23,500.35 and 6,905.30

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Solution

The fourth proportional to 15,679.70, 23,500.35 and 6,905.30 is: 10,349.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.70 : 23,500.35 = 6,905.30 : x
  2. Step 2: Convert to fraction form
    15,679.70/23,500.35 = 6,905.30/x
  3. Step 3: Cross multiply
    15,679.70x = 23,500.35 × 6,905.30
  4. Step 4: Simplify right side
    15,679.70x = 162,276,966.86
  5. Step 5: Solve for x
    x = 162,276,966.86/15,679.70
  6. Step 6: Final answer
    x = 10,349.49

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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.