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Finding the Fourth Proportional to 15,154.60, 20,851.14 and 14,804.68

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Solution

The fourth proportional to 15,154.60, 20,851.14 and 14,804.68 is: 20,369.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.60 : 20,851.14 = 14,804.68 : x
  2. Step 2: Convert to fraction form
    15,154.60/20,851.14 = 14,804.68/x
  3. Step 3: Cross multiply
    15,154.60x = 20,851.14 × 14,804.68
  4. Step 4: Simplify right side
    15,154.60x = 308,694,455.34
  5. Step 5: Solve for x
    x = 308,694,455.34/15,154.60
  6. Step 6: Final answer
    x = 20,369.69

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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.