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Finding the Fourth Proportional to 18,671,669.16, 28,008,378.54 and 9,075,608.88

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Solution

The fourth proportional to 18,671,669.16, 28,008,378.54 and 9,075,608.88 is: 13,613,838.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671,669.16 : 28,008,378.54 = 9,075,608.88 : x
  2. Step 2: Convert to fraction form
    18,671,669.16/28,008,378.54 = 9,075,608.88/x
  3. Step 3: Cross multiply
    18,671,669.16x = 28,008,378.54 × 9,075,608.88
  4. Step 4: Simplify right side
    18,671,669.16x = 254,193,088,992,025.44
  5. Step 5: Solve for x
    x = 254,193,088,992,025.44/18,671,669.16
  6. Step 6: Final answer
    x = 13,613,838.53

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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.