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Finding the Fourth Proportional to 19,166.66, 28,760.94 and 7,477.16

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Solution

The fourth proportional to 19,166.66, 28,760.94 and 7,477.16 is: 11,220.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,166.66 : 28,760.94 = 7,477.16 : x
  2. Step 2: Convert to fraction form
    19,166.66/28,760.94 = 7,477.16/x
  3. Step 3: Cross multiply
    19,166.66x = 28,760.94 × 7,477.16
  4. Step 4: Simplify right side
    19,166.66x = 215,050,150.13
  5. Step 5: Solve for x
    x = 215,050,150.13/19,166.66
  6. Step 6: Final answer
    x = 11,220.01

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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.