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Finding the Fourth Proportional to 14,275.60, 19,699.92 and 7,902.45

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Solution

The fourth proportional to 14,275.60, 19,699.92 and 7,902.45 is: 10,905.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,275.60 : 19,699.92 = 7,902.45 : x
  2. Step 2: Convert to fraction form
    14,275.60/19,699.92 = 7,902.45/x
  3. Step 3: Cross multiply
    14,275.60x = 19,699.92 × 7,902.45
  4. Step 4: Simplify right side
    14,275.60x = 155,677,632.80
  5. Step 5: Solve for x
    x = 155,677,632.80/14,275.60
  6. Step 6: Final answer
    x = 10,905.16

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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.