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Finding the Fourth Proportional to 10,811.55, 16,235.55 and 7,130.10

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Solution

The fourth proportional to 10,811.55, 16,235.55 and 7,130.10 is: 10,707.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,811.55 : 16,235.55 = 7,130.10 : x
  2. Step 2: Convert to fraction form
    10,811.55/16,235.55 = 7,130.10/x
  3. Step 3: Cross multiply
    10,811.55x = 16,235.55 × 7,130.10
  4. Step 4: Simplify right side
    10,811.55x = 115,761,095.06
  5. Step 5: Solve for x
    x = 115,761,095.06/10,811.55
  6. Step 6: Final answer
    x = 10,707.17

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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.