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Finding the Fourth Proportional to 14,775.63, 20,393.79 and 9,740.74

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Solution

The fourth proportional to 14,775.63, 20,393.79 and 9,740.74 is: 13,444.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.63 : 20,393.79 = 9,740.74 : x
  2. Step 2: Convert to fraction form
    14,775.63/20,393.79 = 9,740.74/x
  3. Step 3: Cross multiply
    14,775.63x = 20,393.79 × 9,740.74
  4. Step 4: Simplify right side
    14,775.63x = 198,650,606.00
  5. Step 5: Solve for x
    x = 198,650,606.00/14,775.63
  6. Step 6: Final answer
    x = 13,444.48

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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.