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Finding the Fourth Proportional to 18,456,692.10, 27,685,038.15 and 8,869,758.90

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Solution

The fourth proportional to 18,456,692.10, 27,685,038.15 and 8,869,758.90 is: 13,304,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456,692.10 : 27,685,038.15 = 8,869,758.90 : x
  2. Step 2: Convert to fraction form
    18,456,692.10/27,685,038.15 = 8,869,758.90/x
  3. Step 3: Cross multiply
    18,456,692.10x = 27,685,038.15 × 8,869,758.90
  4. Step 4: Simplify right side
    18,456,692.10x = 245,559,613,527,802.03
  5. Step 5: Solve for x
    x = 245,559,613,527,802.03/18,456,692.10
  6. Step 6: Final answer
    x = 13,304,638.35

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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.