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Finding the Fourth Proportional to 14,448.60, 19,938.96 and 8,480.40

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Solution

The fourth proportional to 14,448.60, 19,938.96 and 8,480.40 is: 11,702.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,448.60 : 19,938.96 = 8,480.40 : x
  2. Step 2: Convert to fraction form
    14,448.60/19,938.96 = 8,480.40/x
  3. Step 3: Cross multiply
    14,448.60x = 19,938.96 × 8,480.40
  4. Step 4: Simplify right side
    14,448.60x = 169,090,356.38
  5. Step 5: Solve for x
    x = 169,090,356.38/14,448.60
  6. Step 6: Final answer
    x = 11,702.89

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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.