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Finding the Fourth Proportional to 18,671,719.05, 28,008,454.10 and 9,075,658.89

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Solution

The fourth proportional to 18,671,719.05, 28,008,454.10 and 9,075,658.89 is: 13,613,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671,719.05 : 28,008,454.10 = 9,075,658.89 : x
  2. Step 2: Convert to fraction form
    18,671,719.05/28,008,454.10 = 9,075,658.89/x
  3. Step 3: Cross multiply
    18,671,719.05x = 28,008,454.10 × 9,075,658.89
  4. Step 4: Simplify right side
    18,671,719.05x = 254,195,175,402,443.66
  5. Step 5: Solve for x
    x = 254,195,175,402,443.66/18,671,719.05
  6. Step 6: Final answer
    x = 13,613,913.89

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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.