Home / 19,579.47-29,369.21-4,788.21

Finding the Fourth Proportional to 19,579.47, 29,369.21 and 4,788.21

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Solution

The fourth proportional to 19,579.47, 29,369.21 and 4,788.21 is: 7,182.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.47 : 29,369.21 = 4,788.21 : x
  2. Step 2: Convert to fraction form
    19,579.47/29,369.21 = 4,788.21/x
  3. Step 3: Cross multiply
    19,579.47x = 29,369.21 × 4,788.21
  4. Step 4: Simplify right side
    19,579.47x = 140,625,921.07
  5. Step 5: Solve for x
    x = 140,625,921.07/19,579.47
  6. Step 6: Final answer
    x = 7,182.32

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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.