Home / 19,645.95-29,445.49-13,690.58

Finding the Fourth Proportional to 19,645.95, 29,445.49 and 13,690.58

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Solution

The fourth proportional to 19,645.95, 29,445.49 and 13,690.58 is: 20,519.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.95 : 29,445.49 = 13,690.58 : x
  2. Step 2: Convert to fraction form
    19,645.95/29,445.49 = 13,690.58/x
  3. Step 3: Cross multiply
    19,645.95x = 29,445.49 × 13,690.58
  4. Step 4: Simplify right side
    19,645.95x = 403,125,655.03
  5. Step 5: Solve for x
    x = 403,125,655.03/19,645.95
  6. Step 6: Final answer
    x = 20,519.53

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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.