Home / 19,669.20-29,347.55-18,275.64

Finding the Fourth Proportional to 19,669.20, 29,347.55 and 18,275.64

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Solution

The fourth proportional to 19,669.20, 29,347.55 and 18,275.64 is: 27,268.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,669.20 : 29,347.55 = 18,275.64 : x
  2. Step 2: Convert to fraction form
    19,669.20/29,347.55 = 18,275.64/x
  3. Step 3: Cross multiply
    19,669.20x = 29,347.55 × 18,275.64
  4. Step 4: Simplify right side
    19,669.20x = 536,345,167.30
  5. Step 5: Solve for x
    x = 536,345,167.30/19,669.20
  6. Step 6: Final answer
    x = 27,268.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.