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Finding the Fourth Proportional to 19,759.71, 29,642.29 and 8,070.20

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Solution

The fourth proportional to 19,759.71, 29,642.29 and 8,070.20 is: 12,106.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,759.71 : 29,642.29 = 8,070.20 : x
  2. Step 2: Convert to fraction form
    19,759.71/29,642.29 = 8,070.20/x
  3. Step 3: Cross multiply
    19,759.71x = 29,642.29 × 8,070.20
  4. Step 4: Simplify right side
    19,759.71x = 239,219,208.76
  5. Step 5: Solve for x
    x = 239,219,208.76/19,759.71
  6. Step 6: Final answer
    x = 12,106.41

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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.