Home / 19,880.28-29,820.12-5,089.07

Finding the Fourth Proportional to 19,880.28, 29,820.12 and 5,089.07

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Solution

The fourth proportional to 19,880.28, 29,820.12 and 5,089.07 is: 7,633.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.28 : 29,820.12 = 5,089.07 : x
  2. Step 2: Convert to fraction form
    19,880.28/29,820.12 = 5,089.07/x
  3. Step 3: Cross multiply
    19,880.28x = 29,820.12 × 5,089.07
  4. Step 4: Simplify right side
    19,880.28x = 151,756,733.55
  5. Step 5: Solve for x
    x = 151,756,733.55/19,880.28
  6. Step 6: Final answer
    x = 7,633.53

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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.