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Finding the Fourth Proportional to 14,487.80, 21,692.82 and 7,547.72

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Solution

The fourth proportional to 14,487.80, 21,692.82 and 7,547.72 is: 11,301.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.80 : 21,692.82 = 7,547.72 : x
  2. Step 2: Convert to fraction form
    14,487.80/21,692.82 = 7,547.72/x
  3. Step 3: Cross multiply
    14,487.80x = 21,692.82 × 7,547.72
  4. Step 4: Simplify right side
    14,487.80x = 163,731,331.37
  5. Step 5: Solve for x
    x = 163,731,331.37/14,487.80
  6. Step 6: Final answer
    x = 11,301.32

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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.