Home / 19,320.09-26,682.77-15,555.72

Finding the Fourth Proportional to 19,320.09, 26,682.77 and 15,555.72

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Solution

The fourth proportional to 19,320.09, 26,682.77 and 15,555.72 is: 21,483.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.09 : 26,682.77 = 15,555.72 : x
  2. Step 2: Convert to fraction form
    19,320.09/26,682.77 = 15,555.72/x
  3. Step 3: Cross multiply
    19,320.09x = 26,682.77 × 15,555.72
  4. Step 4: Simplify right side
    19,320.09x = 415,069,675.35
  5. Step 5: Solve for x
    x = 415,069,675.35/19,320.09
  6. Step 6: Final answer
    x = 21,483.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.