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Finding the Fourth Proportional to 18,671,668.16, 28,008,377.04 and 9,075,607.88

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Solution

The fourth proportional to 18,671,668.16, 28,008,377.04 and 9,075,607.88 is: 13,613,837.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671,668.16 : 28,008,377.04 = 9,075,607.88 : x
  2. Step 2: Convert to fraction form
    18,671,668.16/28,008,377.04 = 9,075,607.88/x
  3. Step 3: Cross multiply
    18,671,668.16x = 28,008,377.04 × 9,075,607.88
  4. Step 4: Simplify right side
    18,671,668.16x = 254,193,047,370,235.09
  5. Step 5: Solve for x
    x = 254,193,047,370,235.09/18,671,668.16
  6. Step 6: Final answer
    x = 13,613,837.03

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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.