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Finding the Fourth Proportional to 14,602.40, 21,885.14 and 7,938.62

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Solution

The fourth proportional to 14,602.40, 21,885.14 and 7,938.62 is: 11,897.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,602.40 : 21,885.14 = 7,938.62 : x
  2. Step 2: Convert to fraction form
    14,602.40/21,885.14 = 7,938.62/x
  3. Step 3: Cross multiply
    14,602.40x = 21,885.14 × 7,938.62
  4. Step 4: Simplify right side
    14,602.40x = 173,737,810.11
  5. Step 5: Solve for x
    x = 173,737,810.11/14,602.40
  6. Step 6: Final answer
    x = 11,897.89

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1.5x scale

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.