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Finding the Fourth Proportional to 20,698.71, 31,051.20 and 7,548.06

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Solution

The fourth proportional to 20,698.71, 31,051.20 and 7,548.06 is: 11,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.71 : 31,051.20 = 7,548.06 : x
  2. Step 2: Convert to fraction form
    20,698.71/31,051.20 = 7,548.06/x
  3. Step 3: Cross multiply
    20,698.71x = 31,051.20 × 7,548.06
  4. Step 4: Simplify right side
    20,698.71x = 234,376,320.67
  5. Step 5: Solve for x
    x = 234,376,320.67/20,698.71
  6. Step 6: Final answer
    x = 11,323.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.