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Finding the Fourth Proportional to 14,294.60, 19,726.08 and 7,920.94

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Solution

The fourth proportional to 14,294.60, 19,726.08 and 7,920.94 is: 10,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,294.60 : 19,726.08 = 7,920.94 : x
  2. Step 2: Convert to fraction form
    14,294.60/19,726.08 = 7,920.94/x
  3. Step 3: Cross multiply
    14,294.60x = 19,726.08 × 7,920.94
  4. Step 4: Simplify right side
    14,294.60x = 156,249,096.12
  5. Step 5: Solve for x
    x = 156,249,096.12/14,294.60
  6. Step 6: Final answer
    x = 10,930.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.