Home / 19,821.00-27,330.56-12,641.32

Finding the Fourth Proportional to 19,821.00, 27,330.56 and 12,641.32

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Solution

The fourth proportional to 19,821.00, 27,330.56 and 12,641.32 is: 17,430.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.00 : 27,330.56 = 12,641.32 : x
  2. Step 2: Convert to fraction form
    19,821.00/27,330.56 = 12,641.32/x
  3. Step 3: Cross multiply
    19,821.00x = 27,330.56 × 12,641.32
  4. Step 4: Simplify right side
    19,821.00x = 345,494,290.47
  5. Step 5: Solve for x
    x = 345,494,290.47/19,821.00
  6. Step 6: Final answer
    x = 17,430.72

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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.