Home / 19,320.63-26,660.25-10,821.57

Finding the Fourth Proportional to 19,320.63, 26,660.25 and 10,821.57

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Solution

The fourth proportional to 19,320.63, 26,660.25 and 10,821.57 is: 14,932.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.63 : 26,660.25 = 10,821.57 : x
  2. Step 2: Convert to fraction form
    19,320.63/26,660.25 = 10,821.57/x
  3. Step 3: Cross multiply
    19,320.63x = 26,660.25 × 10,821.57
  4. Step 4: Simplify right side
    19,320.63x = 288,505,761.59
  5. Step 5: Solve for x
    x = 288,505,761.59/19,320.63
  6. Step 6: Final answer
    x = 14,932.52

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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.