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Finding the Fourth Proportional to 10,904.70, 16,320.60 and 10,029.90

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Solution

The fourth proportional to 10,904.70, 16,320.60 and 10,029.90 is: 15,011.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,904.70 : 16,320.60 = 10,029.90 : x
  2. Step 2: Convert to fraction form
    10,904.70/16,320.60 = 10,029.90/x
  3. Step 3: Cross multiply
    10,904.70x = 16,320.60 × 10,029.90
  4. Step 4: Simplify right side
    10,904.70x = 163,693,985.94
  5. Step 5: Solve for x
    x = 163,693,985.94/10,904.70
  6. Step 6: Final answer
    x = 15,011.32

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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.