Home / 19,880.90-29,821.14-5,089.70

Finding the Fourth Proportional to 19,880.90, 29,821.14 and 5,089.70

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Solution

The fourth proportional to 19,880.90, 29,821.14 and 5,089.70 is: 7,634.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.90 : 29,821.14 = 5,089.70 : x
  2. Step 2: Convert to fraction form
    19,880.90/29,821.14 = 5,089.70/x
  3. Step 3: Cross multiply
    19,880.90x = 29,821.14 × 5,089.70
  4. Step 4: Simplify right side
    19,880.90x = 151,780,656.26
  5. Step 5: Solve for x
    x = 151,780,656.26/19,880.90
  6. Step 6: Final answer
    x = 7,634.50

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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.