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Finding the Fourth Proportional to 10,693.60, 16,018.80 and 7,410.40

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Solution

The fourth proportional to 10,693.60, 16,018.80 and 7,410.40 is: 11,100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,693.60 : 16,018.80 = 7,410.40 : x
  2. Step 2: Convert to fraction form
    10,693.60/16,018.80 = 7,410.40/x
  3. Step 3: Cross multiply
    10,693.60x = 16,018.80 × 7,410.40
  4. Step 4: Simplify right side
    10,693.60x = 118,705,715.52
  5. Step 5: Solve for x
    x = 118,705,715.52/10,693.60
  6. Step 6: Final answer
    x = 11,100.63

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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.